77645352 has 16 divisors (see below), whose sum is σ = 194113440. Its totient is φ = 25881776.

The previous prime is 77645333. The next prime is 77645353. The reversal of 77645352 is 25354677.

It is a self number, because there is not a number n which added to its sum of digits gives 77645352.

It is not an unprimeable number, because it can be changed into a prime (77645353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1617588 + ... + 1617635.

It is an arithmetic number, because the mean of its divisors is an integer number (12132090).

Almost surely, 2^77645352 is an apocalyptic number.

It is an amenable number.

77645352 is an abundant number, since it is smaller than the sum of its proper divisors (116468088).

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

77645352 is a wasteful number, since it uses less digits than its factorization.

77645352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3235232 (or 3235228 counting only the distinct ones).

The product of its digits is 176400, while the sum is 39.

The square root of 77645352 is about 8811.6600025194. The cubic root of 77645352 is about 426.6173244806.

The spelling of 77645352 in words is "seventy-seven million, six hundred forty-five thousand, three hundred fifty-two".