77645132 has 6 divisors (see below), whose sum is σ = 135878988. Its totient is φ = 38822564.

The previous prime is 77645119. The next prime is 77645149. The reversal of 77645132 is 23154677.

It is a junction number, because it is equal to n+sod(n) for n = 77645092 and 77645101.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9705638 + ... + 9705645.

It is an arithmetic number, because the mean of its divisors is an integer number (22646498).

Almost surely, 2^77645132 is an apocalyptic number.

It is an amenable number.

77645132 is a deficient number, since it is larger than the sum of its proper divisors (58233856).

77645132 is a wasteful number, since it uses less digits than its factorization.

77645132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19411287 (or 19411285 counting only the distinct ones).

The product of its digits is 35280, while the sum is 35.

The square root of 77645132 is about 8811.6475190511. The cubic root of 77645132 is about 426.6169215550.

It can be divided in two parts, 77645 and 132, that added together give a palindrome (77777).

The spelling of 77645132 in words is "seventy-seven million, six hundred forty-five thousand, one hundred thirty-two".