877816564 has 12 divisors (see below), whose sum is σ = 1577697604. Its totient is φ = 427045824.

The previous prime is 877816561. The next prime is 877816591. The reversal of 877816564 is 465618778.

877816564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 660490000 + 217326564 = 25700^2 + 14742^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (877816561) 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, 2965449 + ... + 2965744.

Almost surely, 2^877816564 is an apocalyptic number.

It is an amenable number.

877816564 is a deficient number, since it is larger than the sum of its proper divisors (699881040).

877816564 is a wasteful number, since it uses less digits than its factorization.

877816564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5931234 (or 5931232 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 52.

The square root of 877816564 is about 29627.9692857948. The cubic root of 877816564 is about 957.4907575454.

The spelling of 877816564 in words is "eight hundred seventy-seven million, eight hundred sixteen thousand, five hundred sixty-four".