2258685 has 72 divisors (see below), whose sum is σ = 4796064. Its totient is φ = 1010880.

The previous prime is 2258657. The next prime is 2258713. The reversal of 2258685 is 5868522.

It is an interprime number because it is at equal distance from previous prime (2258657) and next prime (2258713).

It is not a de Polignac number, because 2258685 - 2⁵ = 2258653 is a prime.

Its product of digits (38400) is a multiple of the sum of its prime divisors (32).

It is a nialpdrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 173739 + ... + 173751.

It is an arithmetic number, because the mean of its divisors is an integer number (66612).

2^2258685 is an apocalyptic number.

It is an amenable number.

2258685 is an abundant number, since it is smaller than the sum of its proper divisors (2537379).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2258685 is a wasteful number, since it uses less digits than its factorization.

2258685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57 (or 32 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 2258685 is about 1502.8922117038. The cubic root of 2258685 is about 131.2054542708.

The spelling of 2258685 in words is "two million, two hundred fifty-eight thousand, six hundred eighty-five".