68904416 has 24 divisors (see below), whose sum is σ = 155035440. Its totient is φ = 29530368.

The previous prime is 68904373. The next prime is 68904421. The reversal of 68904416 is 61440986.

It is a self number, because there is not a number n which added to its sum of digits gives 68904416.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153581 + ... + 154028.

It is an arithmetic number, because the mean of its divisors is an integer number (6459810).

Almost surely, 2^68904416 is an apocalyptic number.

It is an amenable number.

68904416 is an abundant number, since it is smaller than the sum of its proper divisors (86131024).

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

68904416 is a wasteful number, since it uses less digits than its factorization.

68904416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307626 (or 307618 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 68904416 is about 8300.8683883073. The cubic root of 68904416 is about 409.9671121746.

The spelling of 68904416 in words is "sixty-eight million, nine hundred four thousand, four hundred sixteen".