68364690 has 16 divisors (see below), whose sum is σ = 164075328. Its totient is φ = 18230576.

The previous prime is 68364683. The next prime is 68364707. The reversal of 68364690 is 9646386.

It is a super-2 number, since 2×68364690² = 9347461677592200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon 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, 1139382 + ... + 1139441.

It is an arithmetic number, because the mean of its divisors is an integer number (10254708).

Almost surely, 2^68364690 is an apocalyptic number.

68364690 is an abundant number, since it is smaller than the sum of its proper divisors (95710638).

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

68364690 is a wasteful number, since it uses less digits than its factorization.

68364690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2278833.

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 68364690 is about 8268.2942618172. The cubic root of 68364690 is about 408.8938855077.

The spelling of 68364690 in words is "sixty-eight million, three hundred sixty-four thousand, six hundred ninety".