22399066 has 8 divisors (see below), whose sum is σ = 33619284. Its totient is φ = 11192640.

The previous prime is 22399063. The next prime is 22399067. The reversal of 22399066 is 66099322.

It can be written as a sum of positive squares in 2 ways, for example, as 22325625 + 73441 = 4725^2 + 271^2 .

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

It is not an unprimeable number, because it can be changed into a prime (22399063) 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, 3106 + ... + 7378.

Almost surely, 2^22399066 is an apocalyptic number.

22399066 is a deficient number, since it is larger than the sum of its proper divisors (11220218).

22399066 is a wasteful number, since it uses less digits than its factorization.

22399066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6896.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 22399066 is about 4732.7651536919. The cubic root of 22399066 is about 281.8880312656. Note that the first 3 decimals are identical.

The spelling of 22399066 in words is "twenty-two million, three hundred ninety-nine thousand, sixty-six".