22696991 has 8 divisors (see below), whose sum is σ = 23975424. Its totient is φ = 21452760.

The previous prime is 22696979. The next prime is 22696997. The reversal of 22696991 is 19969622.

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 22696991 - 2¹⁴ = 22680607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22696997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7181 + ... + 9846.

It is an arithmetic number, because the mean of its divisors is an integer number (2996928).

Almost surely, 2^22696991 is an apocalyptic number.

22696991 is a deficient number, since it is larger than the sum of its proper divisors (1278433).

22696991 is a wasteful number, since it uses less digits than its factorization.

22696991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17101.

The product of its digits is 104976, while the sum is 44.

The square root of 22696991 is about 4764.1359132586. The cubic root of 22696991 is about 283.1323075399.

The spelling of 22696991 in words is "twenty-two million, six hundred ninety-six thousand, nine hundred ninety-one".