879900660 has 36 divisors (see below), whose sum is σ = 2669032548. Its totient is φ = 234640128.

The previous prime is 879900643. The next prime is 879900667. The reversal of 879900660 is 66009978.

It can be written as a sum of positive squares in 2 ways, for example, as 464230116 + 415670544 = 21546^2 + 20388^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (879900667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2443989 + ... + 2444348.

It is an arithmetic number, because the mean of its divisors is an integer number (74139793).

Almost surely, 2^879900660 is an apocalyptic number.

It is an amenable number.

879900660 is an abundant number, since it is smaller than the sum of its proper divisors (1789131888).

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

879900660 is a wasteful number, since it uses less digits than its factorization.

879900660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4888352 (or 4888347 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 879900660 is about 29663.1195257680. The cubic root of 879900660 is about 958.2479109913.

The spelling of 879900660 in words is "eight hundred seventy-nine million, nine hundred thousand, six hundred sixty".