22706657 has 4 divisors (see below), whose sum is σ = 22768896. Its totient is φ = 22644420.

The previous prime is 22706627. The next prime is 22706683. The reversal of 22706657 is 75660722.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75660722 = 2 ⋅37830361.

It is a cyclic number.

It is not a de Polignac number, because 22706657 - 2⁸ = 22706401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22706617) 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, 30569 + ... + 31302.

It is an arithmetic number, because the mean of its divisors is an integer number (5692224).

Almost surely, 2^22706657 is an apocalyptic number.

It is an amenable number.

22706657 is a deficient number, since it is larger than the sum of its proper divisors (62239).

22706657 is an equidigital number, since it uses as much as digits as its factorization.

22706657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62238.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 22706657 is about 4765.1502599603. The cubic root of 22706657 is about 283.1724944892.

The spelling of 22706657 in words is "twenty-two million, seven hundred six thousand, six hundred fifty-seven".