2579638698 has 64 divisors (see below), whose sum is σ = 7055435520. Its totient is φ = 680342976.

The previous prime is 2579638687. The next prime is 2579638703. The reversal of 2579638698 is 8968369752.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 257565 + ... + 267392.

It is an arithmetic number, because the mean of its divisors is an integer number (110241180).

Almost surely, 2^2579638698 is an apocalyptic number.

2579638698 is an abundant number, since it is smaller than the sum of its proper divisors (4475796822).

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

2579638698 is a wasteful number, since it uses less digits than its factorization.

2579638698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524988 (or 524982 counting only the distinct ones).

The product of its digits is 39191040, while the sum is 63.

The square root of 2579638698 is about 50790.1437091883. The cubic root of 2579638698 is about 1371.4699440923.

The spelling of 2579638698 in words is "two billion, five hundred seventy-nine million, six hundred thirty-eight thousand, six hundred ninety-eight".