22148666 has 4 divisors (see below), whose sum is σ = 33223002. Its totient is φ = 11074332.

The previous prime is 22148657. The next prime is 22148669. The reversal of 22148666 is 66684122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17884441 + 4264225 = 4229^2 + 2065^2 .

It is not an unprimeable number, because it can be changed into a prime (22148669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5537165 + ... + 5537168.

Almost surely, 2^22148666 is an apocalyptic number.

22148666 is a deficient number, since it is larger than the sum of its proper divisors (11074336).

22148666 is a wasteful number, since it uses less digits than its factorization.

22148666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11074335.

The product of its digits is 27648, while the sum is 35.

The square root of 22148666 is about 4706.2369256126. The cubic root of 22148666 is about 280.8336802781.

The spelling of 22148666 in words is "twenty-two million, one hundred forty-eight thousand, six hundred sixty-six".