77689376 has 24 divisors (see below), whose sum is σ = 158227020. Its totient is φ = 37504768.

The previous prime is 77689357. The next prime is 77689397. The reversal of 77689376 is 67398677.

It can be written as a sum of positive squares in 2 ways, for example, as 68227600 + 9461776 = 8260^2 + 3076^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40931 + ... + 42786.

Almost surely, 2^77689376 is an apocalyptic number.

It is an amenable number.

77689376 is an abundant number, since it is smaller than the sum of its proper divisors (80537644).

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

77689376 is a wasteful number, since it uses less digits than its factorization.

77689376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83756 (or 83748 counting only the distinct ones).

The product of its digits is 2667168, while the sum is 53.

The square root of 77689376 is about 8814.1577022425. The cubic root of 77689376 is about 426.6979382462.

The spelling of 77689376 in words is "seventy-seven million, six hundred eighty-nine thousand, three hundred seventy-six".