22709691 has 12 divisors (see below), whose sum is σ = 32864832. Its totient is φ = 15111216.

The previous prime is 22709683. The next prime is 22709699. The reversal of 22709691 is 19690722.

It is an interprime number because it is at equal distance from previous prime (22709683) and next prime (22709699).

It is not a de Polignac number, because 22709691 - 2³ = 22709683 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22709699) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3385 + ... + 7541.

It is an arithmetic number, because the mean of its divisors is an integer number (2738736).

Almost surely, 2^22709691 is an apocalyptic number.

22709691 is a deficient number, since it is larger than the sum of its proper divisors (10155141).

22709691 is a wasteful number, since it uses less digits than its factorization.

22709691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4770 (or 4767 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 22709691 is about 4765.4686023517. The cubic root of 22709691 is about 283.1851061664.

The spelling of 22709691 in words is "twenty-two million, seven hundred nine thousand, six hundred ninety-one".