258696045 has 64 divisors (see below), whose sum is σ = 480003840. Its totient is φ = 132067584.

The previous prime is 258696017. The next prime is 258696091. The reversal of 258696045 is 540696852.

258696045 is a `hidden beast` number, since 2 + 586 + 9 + 60 + 4 + 5 = 666.

It is not a de Polignac number, because 258696045 - 2⁶ = 258695981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 334279 + ... + 335051.

It is an arithmetic number, because the mean of its divisors is an integer number (7500060).

Almost surely, 2^258696045 is an apocalyptic number.

It is an amenable number.

258696045 is a deficient number, since it is larger than the sum of its proper divisors (221307795).

258696045 is a wasteful number, since it uses less digits than its factorization.

258696045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891 (or 885 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The square root of 258696045 is about 16084.0307448102. The cubic root of 258696045 is about 637.1816542042.

The spelling of 258696045 in words is "two hundred fifty-eight million, six hundred ninety-six thousand, forty-five".