2598470721 has 24 divisors (see below), whose sum is σ = 4679498304. Its totient is φ = 1349854560.

The previous prime is 2598470687. The next prime is 2598470737. The reversal of 2598470721 is 1270748952.

It is a happy number.

2598470721 is a `hidden beast` number, since 25 + 98 + 470 + 72 + 1 = 666.

It is not a de Polignac number, because 2598470721 - 2⁶ = 2598470657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2598470321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1874106 + ... + 1875491.

It is an arithmetic number, because the mean of its divisors is an integer number (194979096).

Almost surely, 2^2598470721 is an apocalyptic number.

2598470721 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2598470721 is a deficient number, since it is larger than the sum of its proper divisors (2081027583).

2598470721 is a wasteful number, since it uses less digits than its factorization.

2598470721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3749621 (or 3749618 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 2598470721 is about 50975.1971158523. The cubic root of 2598470721 is about 1374.7992162578.

The spelling of 2598470721 in words is "two billion, five hundred ninety-eight million, four hundred seventy thousand, seven hundred twenty-one".