22779666 has 48 divisors (see below), whose sum is σ = 60750144. Its totient is φ = 6007392.

The previous prime is 22779661. The next prime is 22779667. The reversal of 22779666 is 66697722.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (22779661) 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 23 ways as a sum of consecutive naturals, for example, 5316 + ... + 8591.

It is an arithmetic number, because the mean of its divisors is an integer number (1265628).

Almost surely, 2^22779666 is an apocalyptic number.

22779666 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

22779666 is an abundant number, since it is smaller than the sum of its proper divisors (37970478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22779666 is a wasteful number, since it uses less digits than its factorization.

22779666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13935 (or 13932 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 22779666 is about 4772.8048357334. The cubic root of 22779666 is about 283.4756658191.

The spelling of 22779666 in words is "twenty-two million, seven hundred seventy-nine thousand, six hundred sixty-six".