22615666 has 8 divisors (see below), whose sum is σ = 33943680. Its totient is φ = 11301108.

The previous prime is 22615657. The next prime is 22615669. The reversal of 22615666 is 66651622.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×22615666² = 1022936697247112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22615669) 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, 4935 + ... + 8341.

It is an arithmetic number, because the mean of its divisors is an integer number (4242960).

Almost surely, 2^22615666 is an apocalyptic number.

22615666 is a deficient number, since it is larger than the sum of its proper divisors (11328014).

22615666 is a wasteful number, since it uses less digits than its factorization.

22615666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6728.

The product of its digits is 25920, while the sum is 34.

The square root of 22615666 is about 4755.5931280966. The cubic root of 22615666 is about 282.7937415048.

The spelling of 22615666 in words is "twenty-two million, six hundred fifteen thousand, six hundred sixty-six".