22899661 has 4 divisors (see below), whose sum is σ = 23053500. Its totient is φ = 22745824.

The previous prime is 22899659. The next prime is 22899671. The reversal of 22899661 is 16699822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15093225 + 7806436 = 3885^2 + 2794^2 .

It is a cyclic number.

It is not a de Polignac number, because 22899661 - 2¹ = 22899659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22899601) 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, 76696 + ... + 76993.

It is an arithmetic number, because the mean of its divisors is an integer number (5763375).

Almost surely, 2^22899661 is an apocalyptic number.

It is an amenable number.

22899661 is a deficient number, since it is larger than the sum of its proper divisors (153839).

22899661 is a wasteful number, since it uses less digits than its factorization.

22899661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153838.

The product of its digits is 93312, while the sum is 43.

The square root of 22899661 is about 4785.3590251934. The cubic root of 22899661 is about 283.9725433021.

The spelling of 22899661 in words is "twenty-two million, eight hundred ninety-nine thousand, six hundred sixty-one".