2591868 has 24 divisors (see below), whose sum is σ = 6189568. Its totient is φ = 843696.

The previous prime is 2591857. The next prime is 2591891. The reversal of 2591868 is 8681952.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1996 + ... + 3027.

2^2591868 is an apocalyptic number.

It is an amenable number.

2591868 is an abundant number, since it is smaller than the sum of its proper divisors (3597700).

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

2591868 is a wasteful number, since it uses less digits than its factorization.

2591868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5073 (or 5071 counting only the distinct ones).

The product of its digits is 34560, while the sum is 39.

The square root of 2591868 is about 1609.9279486983. The cubic root of 2591868 is about 137.3633772415.

The spelling of 2591868 in words is "two million, five hundred ninety-one thousand, eight hundred sixty-eight".