68518959 has 32 divisors (see below), whose sum is σ = 105154560. Its totient is φ = 39398400.

The previous prime is 68518943. The next prime is 68518963. The reversal of 68518959 is 95981586.

It is not a de Polignac number, because 68518959 - 2⁴ = 68518943 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68518969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28899 + ... + 31179.

It is an arithmetic number, because the mean of its divisors is an integer number (3286080).

Almost surely, 2^68518959 is an apocalyptic number.

68518959 is a deficient number, since it is larger than the sum of its proper divisors (36635601).

68518959 is a wasteful number, since it uses less digits than its factorization.

68518959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2351.

The product of its digits is 777600, while the sum is 51.

The square root of 68518959 is about 8277.6179544601. The cubic root of 68518959 is about 409.2012189306.

The spelling of 68518959 in words is "sixty-eight million, five hundred eighteen thousand, nine hundred fifty-nine".