13662631 has 4 divisors (see below), whose sum is σ = 13753264. Its totient is φ = 13572000.

The previous prime is 13662629. The next prime is 13662643. The reversal of 13662631 is 13626631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13626631 = 79 ⋅172489.

It is a cyclic number.

It is not a de Polignac number, because 13662631 - 2¹ = 13662629 is a prime.

It is a super-2 number, since 2×13662631² = 373334971684322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13662631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13662031) 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 3 ways as a sum of consecutive naturals, for example, 45090 + ... + 45391.

It is an arithmetic number, because the mean of its divisors is an integer number (3438316).

Almost surely, 2^13662631 is an apocalyptic number.

13662631 is a deficient number, since it is larger than the sum of its proper divisors (90633).

13662631 is an equidigital number, since it uses as much as digits as its factorization.

13662631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90632.

The product of its digits is 3888, while the sum is 28.

The square root of 13662631 is about 3696.2996361226. The cubic root of 13662631 is about 239.0624942344.

The spelling of 13662631 in words is "thirteen million, six hundred sixty-two thousand, six hundred thirty-one".