22691977 has 24 divisors (see below), whose sum is σ = 28974848. Its totient is φ = 17392320.

The previous prime is 22691959. The next prime is 22691993. The reversal of 22691977 is 77919622.

It is not a de Polignac number, because 22691977 - 2⁷ = 22691849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22691927) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61648 + ... + 62014.

Almost surely, 2^22691977 is an apocalyptic number.

It is an amenable number.

22691977 is a deficient number, since it is larger than the sum of its proper divisors (6282871).

22691977 is a wasteful number, since it uses less digits than its factorization.

22691977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469 (or 458 counting only the distinct ones).

The product of its digits is 95256, while the sum is 43.

The square root of 22691977 is about 4763.6096607510. The cubic root of 22691977 is about 283.1114570530. Note that the first 3 decimals are identical.

The spelling of 22691977 in words is "twenty-two million, six hundred ninety-one thousand, nine hundred seventy-seven".