2258686 has 4 divisors (see below), whose sum is σ = 3388032. Its totient is φ = 1129342.

The previous prime is 2258657. The next prime is 2258713. The reversal of 2258686 is 6868522.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564670 + ... + 564673.

It is an arithmetic number, because the mean of its divisors is an integer number (847008).

2^2258686 is an apocalyptic number.

2258686 is a deficient number, since it is larger than the sum of its proper divisors (1129346).

2258686 is a wasteful number, since it uses less digits than its factorization.

2258686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129345.

The product of its digits is 46080, while the sum is 37.

The square root of 2258686 is about 1502.8925443956. The cubic root of 2258686 is about 131.2054736339.

It can be divided in two parts, 225 and 8686, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 2258686 in words is "two million, two hundred fifty-eight thousand, six hundred eighty-six".