77970712 has 8 divisors (see below), whose sum is σ = 146195100. Its totient is φ = 38985352.

The previous prime is 77970703. The next prime is 77970727. The reversal of 77970712 is 21707977.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4873162 + ... + 4873177.

Almost surely, 2^77970712 is an apocalyptic number.

It is an amenable number.

77970712 is a deficient number, since it is larger than the sum of its proper divisors (68224388).

77970712 is a wasteful number, since it uses less digits than its factorization.

77970712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9746345 (or 9746341 counting only the distinct ones).

The product of its (nonzero) digits is 43218, while the sum is 40.

The square root of 77970712 is about 8830.1026041604. The cubic root of 77970712 is about 427.2123838564.

The spelling of 77970712 in words is "seventy-seven million, nine hundred seventy thousand, seven hundred twelve".