22000664 has 32 divisors (see below), whose sum is σ = 47520000. Its totient is φ = 9353760.

The previous prime is 22000663. The next prime is 22000679. The reversal of 22000664 is 46600022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22000661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5837 + ... + 8835.

It is an arithmetic number, because the mean of its divisors is an integer number (1485000).

Almost surely, 2^22000664 is an apocalyptic number.

It is an amenable number.

22000664 is an abundant number, since it is smaller than the sum of its proper divisors (25519336).

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

22000664 is a wasteful number, since it uses less digits than its factorization.

22000664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3143 (or 3139 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 22000664 is about 4690.4865419272. The cubic root of 22000664 is about 280.2067520586.

Adding to 22000664 its reverse (46600022), we get a palindrome (68600686).

The spelling of 22000664 in words is "twenty-two million, six hundred sixty-four", and thus it is an aban number.