2568631 has 6 divisors (see below), whose sum is σ = 2781600. Its totient is φ = 2370888.

The previous prime is 2568623. The next prime is 2568641. The reversal of 2568631 is 1368652.

It is not a de Polignac number, because 2568631 - 2³ = 2568623 is a prime.

It is a super-2 number, since 2×2568631² = 13195730428322, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹⁷ + 5³ + 6⁴ + 8⁷ + 6⁷ + 3¹⁰ + 1 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2568593 and 2568602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2568641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7431 + ... + 7768.

It is an arithmetic number, because the mean of its divisors is an integer number (463600).

2^2568631 is an apocalyptic number.

2568631 is a deficient number, since it is larger than the sum of its proper divisors (212969).

2568631 is a wasteful number, since it uses less digits than its factorization.

2568631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15225 (or 15212 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 2568631 is about 1602.6949179429. The cubic root of 2568631 is about 136.9516408074.

The spelling of 2568631 in words is "two million, five hundred sixty-eight thousand, six hundred thirty-one".