663800832 has 220 divisors, whose sum is σ = 2033014896. Its totient is φ = 215654400.

The previous prime is 663800821. The next prime is 663800843. The reversal of 663800832 is 238008366.

It is an interprime number because it is at equal distance from previous prime (663800821) and next prime (663800843).

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 19 ways as a sum of consecutive naturals, for example, 4395957 + ... + 4396107.

Almost surely, 2^663800832 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 663800832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1016507448).

663800832 is an abundant number, since it is smaller than the sum of its proper divisors (1369214064).

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

663800832 is a wasteful number, since it uses less digits than its factorization.

663800832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 663800832 is about 25764.3325549101. The cubic root of 663800832 is about 872.3268981694.

The spelling of 663800832 in words is "six hundred sixty-three million, eight hundred thousand, eight hundred thirty-two".