22601605 has 8 divisors (see below), whose sum is σ = 29208312. Its totient is φ = 16690368.

The previous prime is 22601597. The next prime is 22601611. The reversal of 22601605 is 50610622.

It can be written as a sum of positive squares in 4 ways, for example, as 1089 + 22600516 = 33^2 + 4754^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 22601605 - 2³ = 22601597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173794 + ... + 173923.

It is an arithmetic number, because the mean of its divisors is an integer number (3651039).

Almost surely, 2^22601605 is an apocalyptic number.

It is an amenable number.

22601605 is a deficient number, since it is larger than the sum of its proper divisors (6606707).

22601605 is a wasteful number, since it uses less digits than its factorization.

22601605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347735.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 22601605 is about 4754.1145337486. The cubic root of 22601605 is about 282.7351215616.

The spelling of 22601605 in words is "twenty-two million, six hundred one thousand, six hundred five".