22716657 has 12 divisors (see below), whose sum is σ = 33944820. Its totient is φ = 14622048.

The previous prime is 22716643. The next prime is 22716667. The reversal of 22716657 is 75661722.

It can be written as a sum of positive squares in 2 ways, for example, as 5377761 + 17338896 = 2319^2 + 4164^2 .

It is not a de Polignac number, because 22716657 - 2⁸ = 22716401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22716637) 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, 43258 + ... + 43779.

It is an arithmetic number, because the mean of its divisors is an integer number (2828735).

Almost surely, 2^22716657 is an apocalyptic number.

It is an amenable number.

22716657 is a deficient number, since it is larger than the sum of its proper divisors (11228163).

22716657 is a wasteful number, since it uses less digits than its factorization.

22716657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87072 (or 87069 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 22716657 is about 4766.1994293147. The cubic root of 22716657 is about 283.2140580616.

The spelling of 22716657 in words is "twenty-two million, seven hundred sixteen thousand, six hundred fifty-seven".