663166220 has 48 divisors (see below), whose sum is σ = 1412964000. Its totient is φ = 261427200.

The previous prime is 663166183. The next prime is 663166223. The reversal of 663166220 is 22661366.

It is not an unprimeable number, because it can be changed into a prime (663166223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 413420 + ... + 415020.

It is an arithmetic number, because the mean of its divisors is an integer number (29436750).

Almost surely, 2^663166220 is an apocalyptic number.

It is an amenable number.

663166220 is an abundant number, since it is smaller than the sum of its proper divisors (749797780).

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

663166220 is a wasteful number, since it uses less digits than its factorization.

663166220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898 (or 1896 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 663166220 is about 25752.0139018291. The cubic root of 663166220 is about 872.0488199668.

The spelling of 663166220 in words is "six hundred sixty-three million, one hundred sixty-six thousand, two hundred twenty".