77931068 has 6 divisors (see below), whose sum is σ = 136379376. Its totient is φ = 38965532.

The previous prime is 77931047. The next prime is 77931083. The reversal of 77931068 is 86013977.

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 as a sum of consecutive naturals, namely, 9741380 + ... + 9741387.

It is an arithmetic number, because the mean of its divisors is an integer number (22729896).

Almost surely, 2^77931068 is an apocalyptic number.

It is an amenable number.

77931068 is a deficient number, since it is larger than the sum of its proper divisors (58448308).

77931068 is a wasteful number, since it uses less digits than its factorization.

77931068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19482771 (or 19482769 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 77931068 is about 8827.8574977171. The cubic root of 77931068 is about 427.1399665836.

The spelling of 77931068 in words is "seventy-seven million, nine hundred thirty-one thousand, sixty-eight".