22997649 has 8 divisors (see below), whose sum is σ = 30693600. Its totient is φ = 15316736.

The previous prime is 22997641. The next prime is 22997693. The reversal of 22997649 is 94679922.

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 22997649 - 2³ = 22997641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22997598 and 22997607.

It is not an unprimeable number, because it can be changed into a prime (22997641) 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, 502 + ... + 6800.

It is an arithmetic number, because the mean of its divisors is an integer number (3836700).

Almost surely, 2^22997649 is an apocalyptic number.

It is an amenable number.

22997649 is a deficient number, since it is larger than the sum of its proper divisors (7695951).

22997649 is a wasteful number, since it uses less digits than its factorization.

22997649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7519.

The product of its digits is 489888, while the sum is 48.

The square root of 22997649 is about 4795.5864083551. The cubic root of 22997649 is about 284.3770078995.

The spelling of 22997649 in words is "twenty-two million, nine hundred ninety-seven thousand, six hundred forty-nine".