77418812 has 12 divisors (see below), whose sum is σ = 135548616. Its totient is φ = 38690640.

The previous prime is 77418769. The next prime is 77418827. The reversal of 77418812 is 21881477.

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 in 3 ways as a sum of consecutive naturals, for example, 9083 + ... + 15405.

It is an arithmetic number, because the mean of its divisors is an integer number (11295718).

Almost surely, 2^77418812 is an apocalyptic number.

It is an amenable number.

77418812 is a deficient number, since it is larger than the sum of its proper divisors (58129804).

77418812 is a wasteful number, since it uses less digits than its factorization.

77418812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9388 (or 9386 counting only the distinct ones).

The product of its digits is 25088, while the sum is 38.

The square root of 77418812 is about 8798.7960540065. The cubic root of 77418812 is about 426.2020172279.

The spelling of 77418812 in words is "seventy-seven million, four hundred eighteen thousand, eight hundred twelve".