258198664 has 16 divisors (see below), whose sum is σ = 490755420. Its totient is φ = 127330560.

The previous prime is 258198599. The next prime is 258198727. The reversal of 258198664 is 466891852.

258198664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 223741764 + 34456900 = 14958^2 + 5870^2 .

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, 220477 + ... + 221644.

Almost surely, 2^258198664 is an apocalyptic number.

It is an amenable number.

258198664 is a deficient number, since it is larger than the sum of its proper divisors (232556756).

258198664 is a wasteful number, since it uses less digits than its factorization.

258198664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442200 (or 442196 counting only the distinct ones).

The product of its digits is 829440, while the sum is 49.

The square root of 258198664 is about 16068.5613543964. The cubic root of 258198664 is about 636.7730338930.

The spelling of 258198664 in words is "two hundred fifty-eight million, one hundred ninety-eight thousand, six hundred sixty-four".