77626916 has 18 divisors (see below), whose sum is σ = 136816722. Its totient is φ = 38538240.

The previous prime is 77626907. The next prime is 77626919. The reversal of 77626916 is 61962677.

It can be written as a sum of positive squares in 3 ways, for example, as 10816 + 77616100 = 104^2 + 8810^2 .

It is not an unprimeable number, because it can be changed into a prime (77626919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 148736 + ... + 149256.

It is an arithmetic number, because the mean of its divisors is an integer number (7600929).

Almost surely, 2^77626916 is an apocalyptic number.

It is an amenable number.

77626916 is a deficient number, since it is larger than the sum of its proper divisors (59189806).

77626916 is a wasteful number, since it uses less digits than its factorization.

77626916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911 (or 716 counting only the distinct ones).

The product of its digits is 190512, while the sum is 44.

The square root of 77626916 is about 8810.6138265163. The cubic root of 77626916 is about 426.5835566745.

The spelling of 77626916 in words is "seventy-seven million, six hundred twenty-six thousand, nine hundred sixteen".