258862887 has 12 divisors (see below), whose sum is σ = 381869280. Its totient is φ = 168903168.

The previous prime is 258862867. The next prime is 258862909. The reversal of 258862887 is 788268852.

258862887 is a `hidden beast` number, since 2 + 5 + 8 + 8 + 628 + 8 + 7 = 666.

It is not a de Polignac number, because 258862887 - 2¹⁴ = 258846503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258862817) 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, 305562 + ... + 306407.

It is an arithmetic number, because the mean of its divisors is an integer number (31822440).

Almost surely, 2^258862887 is an apocalyptic number.

258862887 is a deficient number, since it is larger than the sum of its proper divisors (123006393).

258862887 is a wasteful number, since it uses less digits than its factorization.

258862887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612022 (or 612019 counting only the distinct ones).

The product of its digits is 3440640, while the sum is 54.

The square root of 258862887 is about 16089.2164818552. The cubic root of 258862887 is about 637.3186049072.

The spelling of 258862887 in words is "two hundred fifty-eight million, eight hundred sixty-two thousand, eight hundred eighty-seven".