876721004 has 12 divisors (see below), whose sum is σ = 1540963200. Its totient is φ = 436445808.

The previous prime is 876720979. The next prime is 876721019. The reversal of 876721004 is 400127678.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477644 + ... + 479475.

It is an arithmetic number, because the mean of its divisors is an integer number (128413600).

Almost surely, 2^876721004 is an apocalyptic number.

It is an amenable number.

876721004 is a deficient number, since it is larger than the sum of its proper divisors (664242196).

876721004 is a wasteful number, since it uses less digits than its factorization.

876721004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957352 (or 957350 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 876721004 is about 29609.4749024700. The cubic root of 876721004 is about 957.0922592268.

The spelling of 876721004 in words is "eight hundred seventy-six million, seven hundred twenty-one thousand, four".