Search a number
-
+
658013 = 1315023
BaseRepresentation
bin10100000101001011101
31020102121212
42200221131
5132024023
622034205
75410256
oct2405135
91212555
10658013
1140a414
12278965
131a0675
14131b2d
15cee78
hexa0a5d

658013 has 4 divisors (see below), whose sum is σ = 663168. Its totient is φ = 652860.

The previous prime is 658001. The next prime is 658043. The reversal of 658013 is 310856.

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 not a de Polignac number, because 658013 - 210 = 656989 is a prime.

It is a super-2 number, since 2×6580132 = 865962216338, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 658013.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 658013.

It is not an unprimeable number, because it can be changed into a prime (658043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2381 + ... + 2642.

It is an arithmetic number, because the mean of its divisors is an integer number (165792).

2658013 is an apocalyptic number.

It is an amenable number.

658013 is a deficient number, since it is larger than the sum of its proper divisors (5155).

658013 is a wasteful number, since it uses less digits than its factorization.

658013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5154.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 658013 is about 811.1800046845. The cubic root of 658013 is about 86.9784153966.

Adding to 658013 its reverse (310856), we get a palindrome (968869).

The spelling of 658013 in words is "six hundred fifty-eight thousand, thirteen".

Divisors: 1 131 5023 658013