10638631 has 2 divisors, whose sum is σ = 10638632. Its totient is φ = 10638630.

The previous prime is 10638601. The next prime is 10638697. The reversal of 10638631 is 13683601.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10638631 - 2⁵ = 10638599 is a prime.

It is a super-2 number, since 2×10638631² = 226360939108322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10638631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10638601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5319315 + 5319316.

It is an arithmetic number, because the mean of its divisors is an integer number (5319316).

Almost surely, 2^10638631 is an apocalyptic number.

10638631 is a deficient number, since it is larger than the sum of its proper divisors (1).

10638631 is an equidigital number, since it uses as much as digits as its factorization.

10638631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 10638631 is about 3261.6914323706. The cubic root of 10638631 is about 219.9354562726.

The spelling of 10638631 in words is "ten million, six hundred thirty-eight thousand, six hundred thirty-one".