220473666 has 48 divisors (see below), whose sum is σ = 547208064. Its totient is φ = 62845632.

The previous prime is 220473623. The next prime is 220473677. The reversal of 220473666 is 666374022.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 220473666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59566 + ... + 63158.

It is an arithmetic number, because the mean of its divisors is an integer number (11400168).

Almost surely, 2^220473666 is an apocalyptic number.

220473666 is an abundant number, since it is smaller than the sum of its proper divisors (326734398).

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

220473666 is a wasteful number, since it uses less digits than its factorization.

220473666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4095 (or 4092 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The square root of 220473666 is about 14848.3556665376. The cubic root of 220473666 is about 604.1140103920.

The spelling of 220473666 in words is "two hundred twenty million, four hundred seventy-three thousand, six hundred sixty-six".