2170687964 has 24 divisors (see below), whose sum is σ = 3848415648. Its totient is φ = 1071221760.

The previous prime is 2170687943. The next prime is 2170687973. The reversal of 2170687964 is 4697860712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98969 + ... + 118895.

It is an arithmetic number, because the mean of its divisors is an integer number (160350652).

Almost surely, 2^2170687964 is an apocalyptic number.

It is an amenable number.

2170687964 is a deficient number, since it is larger than the sum of its proper divisors (1677727684).

2170687964 is a wasteful number, since it uses less digits than its factorization.

2170687964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20285 (or 20283 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 50.

The square root of 2170687964 is about 46590.6424510330. The cubic root of 2170687964 is about 1294.7893922646.

The spelling of 2170687964 in words is "two billion, one hundred seventy million, six hundred eighty-seven thousand, nine hundred sixty-four".