22736666 has 4 divisors (see below), whose sum is σ = 34105002. Its totient is φ = 11368332.

The previous prime is 22736641. The next prime is 22736669. The reversal of 22736666 is 66663722.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66663722 = 2 ⋅33331861.

It can be written as a sum of positive squares in only one way, i.e., 12996025 + 9740641 = 3605^2 + 3121^2 .

It is not an unprimeable number, because it can be changed into a prime (22736669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5684165 + ... + 5684168.

Almost surely, 2^22736666 is an apocalyptic number.

22736666 is a deficient number, since it is larger than the sum of its proper divisors (11368336).

22736666 is a wasteful number, since it uses less digits than its factorization.

22736666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11368335.

The product of its digits is 108864, while the sum is 38.

The square root of 22736666 is about 4768.2980192098. The cubic root of 22736666 is about 283.2971860076.

The spelling of 22736666 in words is "twenty-two million, seven hundred thirty-six thousand, six hundred sixty-six".