663257322 has 112 divisors (see below), whose sum is σ = 1836240000. Its totient is φ = 174890016.

The previous prime is 663257311. The next prime is 663257359. The reversal of 663257322 is 223752366.

It is a happy number.

663257322 is a `hidden beast` number, since 6 + 6 + 325 + 7 + 322 = 666.

It is a super-2 number, since 2×663257322² = 879820550373223368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 130179 + ... + 135177.

It is an arithmetic number, because the mean of its divisors is an integer number (16395000).

Almost surely, 2^663257322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663257322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (918120000).

663257322 is an abundant number, since it is smaller than the sum of its proper divisors (1172982678).

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

663257322 is a wasteful number, since it uses less digits than its factorization.

663257322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5039 (or 5024 counting only the distinct ones).

The product of its digits is 90720, while the sum is 36.

The square root of 663257322 is about 25753.7826736190. The cubic root of 663257322 is about 872.0887505059.

The spelling of 663257322 in words is "six hundred sixty-three million, two hundred fifty-seven thousand, three hundred twenty-two".