77748916 has 12 divisors (see below), whose sum is σ = 155497888. Its totient is φ = 33320952.

The previous prime is 77748907. The next prime is 77748917. The reversal of 77748916 is 61984777.

77748916 is an admirable number.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 77748916.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77748917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1388346 + ... + 1388401.

Almost surely, 2^77748916 is an apocalyptic number.

It is an amenable number.

77748916 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

77748916 is a wasteful number, since it uses less digits than its factorization.

77748916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2776758 (or 2776756 counting only the distinct ones).

The product of its digits is 592704, while the sum is 49.

The square root of 77748916 is about 8817.5345760592. The cubic root of 77748916 is about 426.8069154283.

The spelling of 77748916 in words is "seventy-seven million, seven hundred forty-eight thousand, nine hundred sixteen".