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68501233 = 137500009
BaseRepresentation
bin1000001010100…
…11111011110001
311202220020000201
410011103323301
5120014014413
610444115201
71461152023
oct405237361
9152806021
1068501233
1135737a99
121ab35b01
1311265598
149152013
1560319dd
hex4153ef1

68501233 has 4 divisors (see below), whose sum is σ = 69001380. Its totient is φ = 68001088.

The previous prime is 68501221. The next prime is 68501263. The reversal of 68501233 is 33210586.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31449664 + 37051569 = 5608^2 + 6087^2 .

It is a cyclic number.

It is not a de Polignac number, because 68501233 - 217 = 68370161 is a prime.

It is a Duffinian number.

68501233 is a modest number, since divided by 1233 gives 685 as remainder.

It is not an unprimeable number, because it can be changed into a prime (68501263) 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, 249868 + ... + 250141.

It is an arithmetic number, because the mean of its divisors is an integer number (17250345).

Almost surely, 268501233 is an apocalyptic number.

It is an amenable number.

68501233 is a deficient number, since it is larger than the sum of its proper divisors (500147).

68501233 is a wasteful number, since it uses less digits than its factorization.

68501233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500146.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 68501233 is about 8276.5471665423. The cubic root of 68501233 is about 409.1659288128.

The spelling of 68501233 in words is "sixty-eight million, five hundred one thousand, two hundred thirty-three".

Divisors: 1 137 500009 68501233