877138864 has 40 divisors (see below), whose sum is σ = 1948937760. Its totient is φ = 374619648.

The previous prime is 877138861. The next prime is 877138903. The reversal of 877138864 is 468831778.

It is not an unprimeable number, because it can be changed into a prime (877138861) 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 7 ways as a sum of consecutive naturals, for example, 19452 + ... + 46180.

It is an arithmetic number, because the mean of its divisors is an integer number (48723444).

Almost surely, 2^877138864 is an apocalyptic number.

It is an amenable number.

877138864 is an abundant number, since it is smaller than the sum of its proper divisors (1071798896).

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

877138864 is a wasteful number, since it uses less digits than its factorization.

877138864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27037 (or 27031 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 52.

The square root of 877138864 is about 29616.5302491700. The cubic root of 877138864 is about 957.2442905072.

The spelling of 877138864 in words is "eight hundred seventy-seven million, one hundred thirty-eight thousand, eight hundred sixty-four".