22000691 has 4 divisors (see below), whose sum is σ = 22030512. Its totient is φ = 21970872.

The previous prime is 22000679. The next prime is 22000721. The reversal of 22000691 is 19600022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22000691 - 2¹⁴ = 21984307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22000621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13775 + ... + 15288.

It is an arithmetic number, because the mean of its divisors is an integer number (5507628).

Almost surely, 2^22000691 is an apocalyptic number.

22000691 is a deficient number, since it is larger than the sum of its proper divisors (29821).

22000691 is an equidigital number, since it uses as much as digits as its factorization.

22000691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29820.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 22000691 is about 4690.4894200925. The cubic root of 22000691 is about 280.2068666851.

The spelling of 22000691 in words is "twenty-two million, six hundred ninety-one", and thus it is an aban number.