68877904 has 10 divisors (see below), whose sum is σ = 133450970. Its totient is φ = 34438944.

The previous prime is 68877833. The next prime is 68877917. The reversal of 68877904 is 40977886.

It can be written as a sum of positive squares in only one way, i.e., 44355600 + 24522304 = 6660^2 + 4952^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2152419 + ... + 2152450.

It is an arithmetic number, because the mean of its divisors is an integer number (13345097).

Almost surely, 2^68877904 is an apocalyptic number.

It is an amenable number.

68877904 is a deficient number, since it is larger than the sum of its proper divisors (64573066).

68877904 is a wasteful number, since it uses less digits than its factorization.

68877904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4304877 (or 4304871 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 68877904 is about 8299.2712933124. The cubic root of 68877904 is about 409.9145251126.

The spelling of 68877904 in words is "sixty-eight million, eight hundred seventy-seven thousand, nine hundred four".