220480664 has 16 divisors (see below), whose sum is σ = 416178000. Its totient is φ = 109499872.

The previous prime is 220480661. The next prime is 220480727. The reversal of 220480664 is 466084022.

It is a happy number.

It is a super-2 number, since 2×220480664² = 97223446395761792, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 220480664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220480661) 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, 91292 + ... + 93675.

It is an arithmetic number, because the mean of its divisors is an integer number (26011125).

Almost surely, 2^220480664 is an apocalyptic number.

It is an amenable number.

220480664 is a deficient number, since it is larger than the sum of its proper divisors (195697336).

220480664 is a wasteful number, since it uses less digits than its factorization.

220480664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185122 (or 185118 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 220480664 is about 14848.5913136567. The cubic root of 220480664 is about 604.1204020020.

The spelling of 220480664 in words is "two hundred twenty million, four hundred eighty thousand, six hundred sixty-four".