258611563 has 12 divisors (see below), whose sum is σ = 313914960. Its totient is φ = 212028432.

The previous prime is 258611543. The next prime is 258611567. The reversal of 258611563 is 365116852.

It is not a de Polignac number, because 258611563 - 2⁹ = 258611051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258611567) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113608 + ... + 115861.

It is an arithmetic number, because the mean of its divisors is an integer number (26159580).

Almost surely, 2^258611563 is an apocalyptic number.

258611563 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

258611563 is a deficient number, since it is larger than the sum of its proper divisors (55303397).

258611563 is a wasteful number, since it uses less digits than its factorization.

258611563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229506 (or 229499 counting only the distinct ones).

The product of its digits is 43200, while the sum is 37.

The square root of 258611563 is about 16081.4042608225. The cubic root of 258611563 is about 637.1122854832.

The spelling of 258611563 in words is "two hundred fifty-eight million, six hundred eleven thousand, five hundred sixty-three".