68477904 has 120 divisors (see below), whose sum is σ = 221450112. Its totient is φ = 19522560.

The previous prime is 68477897. The next prime is 68477939. The reversal of 68477904 is 40977486.

It is a self number, because there is not a number n which added to its sum of digits gives 68477904.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 25657 + ... + 28199.

Almost surely, 2^68477904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68477904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110725056).

68477904 is an abundant number, since it is smaller than the sum of its proper divisors (152972208).

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

68477904 is a wasteful number, since it uses less digits than its factorization.

68477904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2585 (or 2576 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 68477904 is about 8275.1377027817. The cubic root of 68477904 is about 409.1194745844.

The spelling of 68477904 in words is "sixty-eight million, four hundred seventy-seven thousand, nine hundred four".