258598945 has 32 divisors (see below), whose sum is σ = 352408320. Its totient is φ = 180445440.

The previous prime is 258598889. The next prime is 258598979. The reversal of 258598945 is 549895852.

258598945 = T₁₇₄ + T₁₇₅ + ... + T₁₁₅₈.

258598945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 258598945 - 2⁷ = 258598817 is a prime.

It is a super-2 number, since 2×258598945² = 133746828710226050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (55).

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, 313804 + ... + 314626.

It is an arithmetic number, because the mean of its divisors is an integer number (11012760).

Almost surely, 2^258598945 is an apocalyptic number.

It is an amenable number.

258598945 is a deficient number, since it is larger than the sum of its proper divisors (93809375).

258598945 is a wasteful number, since it uses less digits than its factorization.

258598945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065.

The product of its digits is 5184000, while the sum is 55.

The square root of 258598945 is about 16081.0119395516. The cubic root of 258598945 is about 637.1019234644.

The spelling of 258598945 in words is "two hundred fifty-eight million, five hundred ninety-eight thousand, nine hundred forty-five".