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652213 = 1934327
BaseRepresentation
bin10011111001110110101
31020010200001
42133032311
5131332323
621551301
75354332
oct2371665
91203601
10652213
11406021
12275531
1319ab33
1412d989
15cd3ad
hex9f3b5

652213 has 4 divisors (see below), whose sum is σ = 686560. Its totient is φ = 617868.

The previous prime is 652207. The next prime is 652217. The reversal of 652213 is 312256.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-652213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 34327 = 652213 / (6 + 5 + 2 + 2 + 1 + 3).

It is a Duffinian number.

652213 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (652217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17145 + ... + 17182.

It is an arithmetic number, because the mean of its divisors is an integer number (171640).

2652213 is an apocalyptic number.

It is an amenable number.

652213 is a deficient number, since it is larger than the sum of its proper divisors (34347).

652213 is a wasteful number, since it uses less digits than its factorization.

652213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34346.

The product of its digits is 360, while the sum is 19.

The square root of 652213 is about 807.5970529912. The cubic root of 652213 is about 86.7221062116.

Adding to 652213 its reverse (312256), we get a palindrome (964469).

It can be divided in two parts, 65 and 2213, that added together give a triangular number (2278 = T67).

The spelling of 652213 in words is "six hundred fifty-two thousand, two hundred thirteen".

Divisors: 1 19 34327 652213