77768924 has 6 divisors (see below), whose sum is σ = 136095624. Its totient is φ = 38884460.

The previous prime is 77768917. The next prime is 77768941. The reversal of 77768924 is 42986777.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9721112 + ... + 9721119.

It is an arithmetic number, because the mean of its divisors is an integer number (22682604).

Almost surely, 2^77768924 is an apocalyptic number.

It is an amenable number.

77768924 is a deficient number, since it is larger than the sum of its proper divisors (58326700).

77768924 is a wasteful number, since it uses less digits than its factorization.

77768924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19442235 (or 19442233 counting only the distinct ones).

The product of its digits is 1185408, while the sum is 50.

The square root of 77768924 is about 8818.6690605782. The cubic root of 77768924 is about 426.8435239574.

The spelling of 77768924 in words is "seventy-seven million, seven hundred sixty-eight thousand, nine hundred twenty-four".