663552360 has 48 divisors (see below), whose sum is σ = 2156546340. Its totient is φ = 176947200.

The previous prime is 663552359. The next prime is 663552367. The reversal of 663552360 is 63255366.

It can be written as a sum of positive squares in 2 ways, for example, as 626901444 + 36650916 = 25038^2 + 6054^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (663552367) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 921241 + ... + 921960.

Almost surely, 2^663552360 is an apocalyptic number.

663552360 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

663552360 is an abundant number, since it is smaller than the sum of its proper divisors (1492993980).

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

663552360 is a wasteful number, since it uses less digits than its factorization.

663552360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843218 (or 1843211 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 36.

The square root of 663552360 is about 25759.5100885091. The cubic root of 663552360 is about 872.2180422956.

The spelling of 663552360 in words is "six hundred sixty-three million, five hundred fifty-two thousand, three hundred sixty".