77930808 has 32 divisors (see below), whose sum is σ = 203299200. Its totient is φ = 24847328.

The previous prime is 77930777. The next prime is 77930813. The reversal of 77930808 is 80803977.

It is a self number, because there is not a number n which added to its sum of digits gives 77930808.

It is a congruent number.

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, 70038 + ... + 71141.

It is an arithmetic number, because the mean of its divisors is an integer number (6353100).

Almost surely, 2^77930808 is an apocalyptic number.

It is an amenable number.

77930808 is an abundant number, since it is smaller than the sum of its proper divisors (125368392).

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

77930808 is a wasteful number, since it uses less digits than its factorization.

77930808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141211 (or 141207 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 77930808 is about 8827.8427715949. The cubic root of 77930808 is about 427.1394915633.

The spelling of 77930808 in words is "seventy-seven million, nine hundred thirty thousand, eight hundred eight".