22661643 has 8 divisors (see below), whose sum is σ = 30952656. Its totient is φ = 14739200.

The previous prime is 22661641. The next prime is 22661657. The reversal of 22661643 is 34616622.

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 22661643 - 2¹ = 22661641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22661643.

It is not an unprimeable number, because it can be changed into a prime (22661641) 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, 91998 + ... + 92243.

It is an arithmetic number, because the mean of its divisors is an integer number (3869082).

Almost surely, 2^22661643 is an apocalyptic number.

22661643 is a deficient number, since it is larger than the sum of its proper divisors (8291013).

22661643 is a wasteful number, since it uses less digits than its factorization.

22661643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184285.

The product of its digits is 10368, while the sum is 30.

The square root of 22661643 is about 4760.4246659306. The cubic root of 22661643 is about 282.9852489741.

The spelling of 22661643 in words is "twenty-two million, six hundred sixty-one thousand, six hundred forty-three".