220649604 has 24 divisors (see below), whose sum is σ = 588399168. Its totient is φ = 63042720.

The previous prime is 220649591. The next prime is 220649609. The reversal of 220649604 is 406946022.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (220649609) 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, 1313307 + ... + 1313474.

It is an arithmetic number, because the mean of its divisors is an integer number (24516632).

Almost surely, 2^220649604 is an apocalyptic number.

It is an amenable number.

220649604 is an abundant number, since it is smaller than the sum of its proper divisors (367749564).

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

220649604 is a wasteful number, since it uses less digits than its factorization.

220649604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2626795 (or 2626793 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 220649604 is about 14854.2789794725. The cubic root of 220649604 is about 604.2746620063.

The spelling of 220649604 in words is "two hundred twenty million, six hundred forty-nine thousand, six hundred four".