22766819 has 2 divisors, whose sum is σ = 22766820. Its totient is φ = 22766818.

The previous prime is 22766761. The next prime is 22766851. The reversal of 22766819 is 91866722.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22766819 - 2⁸ = 22766563 is a prime.

It is a super-2 number, since 2×22766819² = 1036656094757522, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (22766869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11383409 + 11383410.

It is an arithmetic number, because the mean of its divisors is an integer number (11383410).

Almost surely, 2^22766819 is an apocalyptic number.

22766819 is a deficient number, since it is larger than the sum of its proper divisors (1).

22766819 is an equidigital number, since it uses as much as digits as its factorization.

22766819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 41.

The square root of 22766819 is about 4771.4587916066. The cubic root of 22766819 is about 283.4223654076.

The spelling of 22766819 in words is "twenty-two million, seven hundred sixty-six thousand, eight hundred nineteen".