77901696 has 64 divisors (see below), whose sum is σ = 229928400. Its totient is φ = 25966080.

The previous prime is 77901689. The next prime is 77901709. The reversal of 77901696 is 69610977.

It is a tau number, because it is divible by the number of its divisors (64).

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 7 ways as a sum of consecutive naturals, for example, 7815 + ... + 14726.

Almost surely, 2^77901696 is an apocalyptic number.

It is an amenable number.

77901696 is an abundant number, since it is smaller than the sum of its proper divisors (152026704).

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

77901696 is a wasteful number, since it uses less digits than its factorization.

77901696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22564 (or 22546 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 45.

The square root of 77901696 is about 8826.1937436247. The cubic root of 77901696 is about 427.0862972237.

The spelling of 77901696 in words is "seventy-seven million, nine hundred one thousand, six hundred ninety-six".