77944612 has 24 divisors (see below), whose sum is σ = 146643840. Its totient is φ = 36133920.

The previous prime is 77944597. The next prime is 77944621. The reversal of 77944612 is 21644977.

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, 7339 + ... + 14482.

It is an arithmetic number, because the mean of its divisors is an integer number (6110160).

Almost surely, 2^77944612 is an apocalyptic number.

It is an amenable number.

77944612 is a deficient number, since it is larger than the sum of its proper divisors (68699228).

77944612 is a wasteful number, since it uses less digits than its factorization.

77944612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21891 (or 21889 counting only the distinct ones).

The product of its digits is 84672, while the sum is 40.

The square root of 77944612 is about 8828.6245814396. The cubic root of 77944612 is about 427.1647100256.

The spelling of 77944612 in words is "seventy-seven million, nine hundred forty-four thousand, six hundred twelve".