11772631 has 4 divisors (see below), whose sum is σ = 12678232. Its totient is φ = 10867032.

The previous prime is 11772613. The next prime is 11772689. The reversal of 11772631 is 13627711.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11772631 - 2¹⁵ = 11739863 is a prime.

It is a super-2 number, since 2×11772631² = 277189681324322, 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 11772631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11772601) 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, 452781 + ... + 452806.

It is an arithmetic number, because the mean of its divisors is an integer number (3169558).

Almost surely, 2^11772631 is an apocalyptic number.

11772631 is a deficient number, since it is larger than the sum of its proper divisors (905601).

11772631 is an equidigital number, since it uses as much as digits as its factorization.

11772631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905600.

The product of its digits is 1764, while the sum is 28.

The square root of 11772631 is about 3431.1267828514. The cubic root of 11772631 is about 227.4876602412.

It can be divided in two parts, 11772 and 631, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 11772631 in words is "eleven million, seven hundred seventy-two thousand, six hundred thirty-one".