663162880 has 52 divisors (see below), whose sum is σ = 1591445772. Its totient is φ = 265256960.

The previous prime is 663162859. The next prime is 663162901. The reversal of 663162880 is 88261366.

It is an interprime number because it is at equal distance from previous prime (663162859) and next prime (663162901).

It can be written as a sum of positive squares in 2 ways, for example, as 323424256 + 339738624 = 17984^2 + 18432^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4290 + ... + 36670.

Almost surely, 2^663162880 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 663162880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (795722886).

663162880 is an abundant number, since it is smaller than the sum of its proper divisors (928282892).

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

663162880 is an equidigital number, since it uses as much as digits as its factorization.

663162880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32410 (or 32388 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 663162880 is about 25751.9490524504. The cubic root of 663162880 is about 872.0473559558.

It can be divided in two parts, 66316 and 2880, that added together give a palindrome (69196).

The spelling of 663162880 in words is "six hundred sixty-three million, one hundred sixty-two thousand, eight hundred eighty".