77116648 has 32 divisors (see below), whose sum is σ = 165672000. Its totient is φ = 32965632.

The previous prime is 77116619. The next prime is 77116657. The reversal of 77116648 is 84661177.

It is a self number, because there is not a number n which added to its sum of digits gives 77116648.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23611 + ... + 26677.

It is an arithmetic number, because the mean of its divisors is an integer number (5177250).

Almost surely, 2^77116648 is an apocalyptic number.

It is an amenable number.

77116648 is an abundant number, since it is smaller than the sum of its proper divisors (88555352).

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

77116648 is a wasteful number, since it uses less digits than its factorization.

77116648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3529 (or 3525 counting only the distinct ones).

The product of its digits is 56448, while the sum is 40.

The square root of 77116648 is about 8781.6085086959. The cubic root of 77116648 is about 425.6468084317.

The spelling of 77116648 in words is "seventy-seven million, one hundred sixteen thousand, six hundred forty-eight".