22065631 has 24 divisors (see below), whose sum is σ = 27373680. Its totient is φ = 17684352.

The previous prime is 22065629. The next prime is 22065689. The reversal of 22065631 is 13656022.

It is not a de Polignac number, because 22065631 - 2¹ = 22065629 is a prime.

It is a super-2 number, since 2×22065631² = 973784142856322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22065596 and 22065605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22065601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 127461 + ... + 127633.

It is an arithmetic number, because the mean of its divisors is an integer number (1140570).

Almost surely, 2^22065631 is an apocalyptic number.

22065631 is a deficient number, since it is larger than the sum of its proper divisors (5308049).

22065631 is a wasteful number, since it uses less digits than its factorization.

22065631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 22065631 is about 4697.4068378202. The cubic root of 22065631 is about 280.4822937827.

The spelling of 22065631 in words is "twenty-two million, sixty-five thousand, six hundred thirty-one".