22766791 has 4 divisors (see below), whose sum is σ = 24106032. Its totient is φ = 21427552.

The previous prime is 22766761. The next prime is 22766819. The reversal of 22766791 is 19766722.

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 22766791 - 2¹⁷ = 22635719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22766761) 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, 669595 + ... + 669628.

It is an arithmetic number, because the mean of its divisors is an integer number (6026508).

Almost surely, 2^22766791 is an apocalyptic number.

22766791 is a deficient number, since it is larger than the sum of its proper divisors (1339241).

22766791 is a wasteful number, since it uses less digits than its factorization.

22766791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339240.

The product of its digits is 63504, while the sum is 40.

The square root of 22766791 is about 4771.4558574926. The cubic root of 22766791 is about 283.4222492176.

The spelling of 22766791 in words is "twenty-two million, seven hundred sixty-six thousand, seven hundred ninety-one".