2604631 has 4 divisors (see below), whose sum is σ = 2614312. Its totient is φ = 2594952.

The previous prime is 2604617. The next prime is 2604647. The reversal of 2604631 is 1364062.

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

It is a cyclic number.

It is not a de Polignac number, because 2604631 - 2¹³ = 2596439 is a prime.

It is a super-2 number, since 2×2604631² = 13568205292322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2604601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4425 + ... + 4978.

It is an arithmetic number, because the mean of its divisors is an integer number (653578).

2^2604631 is an apocalyptic number.

2604631 is a deficient number, since it is larger than the sum of its proper divisors (9681).

2604631 is an equidigital number, since it uses as much as digits as its factorization.

2604631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9680.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 2604631 is about 1613.8869229286. The cubic root of 2604631 is about 137.5884785907.

Adding to 2604631 its reverse (1364062), we get a palindrome (3968693).

The spelling of 2604631 in words is "two million, six hundred four thousand, six hundred thirty-one".