68565864 has 32 divisors (see below), whose sum is σ = 173085120. Its totient is φ = 22632576.

The previous prime is 68565853. The next prime is 68565881. The reversal of 68565864 is 46856586.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11397 + ... + 16340.

It is an arithmetic number, because the mean of its divisors is an integer number (5408910).

Almost surely, 2^68565864 is an apocalyptic number.

It is an amenable number.

68565864 is an abundant number, since it is smaller than the sum of its proper divisors (104519256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68565864 is a wasteful number, since it uses less digits than its factorization.

68565864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27849 (or 27845 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 48.

The square root of 68565864 is about 8280.4507123707. The cubic root of 68565864 is about 409.2945712204.

It can be divided in two parts, 6856 and 5864, that added together give a triangular number (12720 = T₁₅₉).

The spelling of 68565864 in words is "sixty-eight million, five hundred sixty-five thousand, eight hundred sixty-four".