2631613 has 4 divisors (see below), whose sum is σ = 2634940. Its totient is φ = 2628288.

The previous prime is 2631581. The next prime is 2631631. The reversal of 2631613 is 3161362.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2617924 + 13689 = 1618^2 + 117^2 .

It is a cyclic number.

It is not a de Polignac number, because 2631613 - 2⁵ = 2631581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2631653) 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, 283 + ... + 2311.

It is an arithmetic number, because the mean of its divisors is an integer number (658735).

2^2631613 is an apocalyptic number.

It is an amenable number.

2631613 is a deficient number, since it is larger than the sum of its proper divisors (3327).

2631613 is a wasteful number, since it uses less digits than its factorization.

2631613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3326.

The product of its digits is 648, while the sum is 22.

The square root of 2631613 is about 1622.2247069996. The cubic root of 2631613 is about 138.0619514604.

Adding to 2631613 its reverse (3161362), we get a palindrome (5792975).

The spelling of 2631613 in words is "two million, six hundred thirty-one thousand, six hundred thirteen".