22266666 has 12 divisors (see below), whose sum is σ = 48244482. Its totient is φ = 7422216.

The previous prime is 22266653. The next prime is 22266683. The reversal of 22266666 is 66666222.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20061441 + 2205225 = 4479^2 + 1485^2 .

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

22266666 is a modest number, since divided by 6666 gives 2226 as remainder.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 22266666.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 618501 + ... + 618536.

Almost surely, 2^22266666 is an apocalyptic number.

22266666 is an abundant number, since it is smaller than the sum of its proper divisors (25977816).

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

22266666 is a wasteful number, since it uses less digits than its factorization.

22266666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237045 (or 1237042 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 22266666 is about 4718.7568278096. The cubic root of 22266666 is about 281.3315236264.

The spelling of 22266666 in words is "twenty-two million, two hundred sixty-six thousand, six hundred sixty-six".