22520661 has 8 divisors (see below), whose sum is σ = 30666624. Its totient is φ = 14694240.

The previous prime is 22520633. The next prime is 22520669. The reversal of 22520661 is 16602522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22520661 - 2⁵ = 22520629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22520669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79720 + ... + 80001.

It is an arithmetic number, because the mean of its divisors is an integer number (3833328).

Almost surely, 2^22520661 is an apocalyptic number.

It is an amenable number.

22520661 is a deficient number, since it is larger than the sum of its proper divisors (8145963).

22520661 is a wasteful number, since it uses less digits than its factorization.

22520661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159771.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 22520661 is about 4745.5938511423. The cubic root of 22520661 is about 282.3971944297.

The spelling of 22520661 in words is "twenty-two million, five hundred twenty thousand, six hundred sixty-one".