22685651 has 2 divisors, whose sum is σ = 22685652. Its totient is φ = 22685650.

The previous prime is 22685609. The next prime is 22685653. The reversal of 22685651 is 15658622.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22685651 - 2¹⁴ = 22669267 is a prime.

It is a super-2 number, since 2×22685651² = 1029277522587602, which contains 22 as substring.

Together with 22685653, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22685653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11342825 + 11342826.

It is an arithmetic number, because the mean of its divisors is an integer number (11342826).

Almost surely, 2^22685651 is an apocalyptic number.

22685651 is a deficient number, since it is larger than the sum of its proper divisors (1).

22685651 is an equidigital number, since it uses as much as digits as its factorization.

22685651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28800, while the sum is 35.

The square root of 22685651 is about 4762.9456221964. The cubic root of 22685651 is about 283.0851462924.

The spelling of 22685651 in words is "twenty-two million, six hundred eighty-five thousand, six hundred fifty-one".