2506631 has 2 divisors, whose sum is σ = 2506632. Its totient is φ = 2506630.

The previous prime is 2506619. The next prime is 2506643. The reversal of 2506631 is 1366052.

It is a balanced prime because it is at equal distance from previous prime (2506619) and next prime (2506643).

It is a cyclic number.

It is not a de Polignac number, because 2506631 - 2¹⁴ = 2490247 is a prime.

It is a super-2 number, since 2×2506631² = 12566397940322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2506597 and 2506606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2506661) 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 as a sum of consecutive naturals, namely, 1253315 + 1253316.

It is an arithmetic number, because the mean of its divisors is an integer number (1253316).

2^2506631 is an apocalyptic number.

2506631 is a deficient number, since it is larger than the sum of its proper divisors (1).

2506631 is an equidigital number, since it uses as much as digits as its factorization.

2506631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 2506631 is about 1583.2343477830. The cubic root of 2506631 is about 135.8407702487.

The spelling of 2506631 in words is "two million, five hundred six thousand, six hundred thirty-one".