22590609 has 16 divisors (see below), whose sum is σ = 31660992. Its totient is φ = 14309568.

The previous prime is 22590571. The next prime is 22590611. The reversal of 22590609 is 90609522.

It is not a de Polignac number, because 22590609 - 2⁸ = 22590353 is a prime.

It is a super-2 number, since 2×22590609² = 1020671229981762, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22590609.

It is not an unprimeable number, because it can be changed into a prime (22590509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2407 + ... + 7139.

It is an arithmetic number, because the mean of its divisors is an integer number (1978812).

Almost surely, 2^22590609 is an apocalyptic number.

It is an amenable number.

22590609 is a deficient number, since it is larger than the sum of its proper divisors (9070383).

22590609 is a wasteful number, since it uses less digits than its factorization.

22590609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4816.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 22590609 is about 4752.9579211266. The cubic root of 22590609 is about 282.6892625807.

The spelling of 22590609 in words is "twenty-two million, five hundred ninety thousand, six hundred nine".