11662631 has 2 divisors, whose sum is σ = 11662632.
Its totient is φ = 11662630.
The previous prime is 11662621. The next prime is 11662639. The reversal of 11662631 is 13626611.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 11662631 - 210 = 11661607 is a prime.
It is a super-2 number, since 2×116626312 = 272033923684322, which contains 22 as substring.
It is a Chen prime.
It is a self number, because there is not a number n which added to its sum of digits gives 11662631.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (11662639) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5831315 + 5831316.
It is an arithmetic number, because the mean of its divisors is an integer number (5831316).
Almost surely, 211662631 is an apocalyptic number.
11662631 is a deficient number, since it is larger than the sum of its proper divisors (1).
11662631 is an equidigital number, since it uses as much as digits as its factorization.
11662631 is an evil number, because the sum of its binary digits is even.
The product of its digits is 1296, while the sum is 26.
The square root of 11662631 is about 3415.0594431137.
The cubic root of 11662631 is about 226.7769160418.
The spelling of 11662631 in words is "eleven million, six hundred sixty-two thousand, six hundred thirty-one".