663163632 has 40 divisors (see below), whose sum is σ = 1903526480. Its totient is φ = 221054400.

The previous prime is 663163607. The next prime is 663163639. The reversal of 663163632 is 236361366.

It is a happy number.

663163632 is a `hidden beast` number, since 6 + 6 + 3 + 16 + 3 + 632 = 666.

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663163639) 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, 767119 + ... + 767982.

It is an arithmetic number, because the mean of its divisors is an integer number (47588162).

Almost surely, 2^663163632 is an apocalyptic number.

It is an amenable number.

663163632 is an abundant number, since it is smaller than the sum of its proper divisors (1240362848).

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

663163632 is a wasteful number, since it uses less digits than its factorization.

663163632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535118 (or 1535106 counting only the distinct ones).

The product of its digits is 69984, while the sum is 36.

The square root of 663163632 is about 25751.9636532828. The cubic root of 663163632 is about 872.0476855779.

The spelling of 663163632 in words is "six hundred sixty-three million, one hundred sixty-three thousand, six hundred thirty-two".