663492732 has 72 divisors (see below), whose sum is σ = 1849642704. Its totient is φ = 184439808.

The previous prime is 663492703. The next prime is 663492733. The reversal of 663492732 is 237294366.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663492733) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6508 + ... + 37004.

It is an arithmetic number, because the mean of its divisors is an integer number (25689482).

Almost surely, 2^663492732 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663492732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (924821352).

663492732 is an abundant number, since it is smaller than the sum of its proper divisors (1186149972).

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

663492732 is a wasteful number, since it uses less digits than its factorization.

663492732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30555 (or 30546 counting only the distinct ones).

The product of its digits is 326592, while the sum is 42.

The square root of 663492732 is about 25758.3526647183. The cubic root of 663492732 is about 872.1919151560.

The spelling of 663492732 in words is "six hundred sixty-three million, four hundred ninety-two thousand, seven hundred thirty-two".