663047712 has 72 divisors (see below), whose sum is σ = 1984797360. Its totient is φ = 209381760.

The previous prime is 663047701. The next prime is 663047767. The reversal of 663047712 is 217740366.

663047712 is a `hidden beast` number, since 6 + 630 + 4 + 7 + 7 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55114 + ... + 66057.

It is an arithmetic number, because the mean of its divisors is an integer number (27566630).

Almost surely, 2^663047712 is an apocalyptic number.

It is an amenable number.

663047712 is an abundant number, since it is smaller than the sum of its proper divisors (1321749648).

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

663047712 is a wasteful number, since it uses less digits than its factorization.

663047712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121206 (or 121195 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 663047712 is about 25749.7128527679. The cubic root of 663047712 is about 871.9968717448.

The spelling of 663047712 in words is "six hundred sixty-three million, forty-seven thousand, seven hundred twelve".