663625152 has 84 divisors (see below), whose sum is σ = 1909678680. Its totient is φ = 220334592.

The previous prime is 663625133. The next prime is 663625159. The reversal of 663625152 is 251526366.

It is a happy number.

663625152 is a `hidden beast` number, since 6 + 636 + 2 + 5 + 15 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663625159) 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, 152803 + ... + 157085.

It is an arithmetic number, because the mean of its divisors is an integer number (22734270).

Almost surely, 2^663625152 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 663625152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (954839340).

663625152 is an abundant number, since it is smaller than the sum of its proper divisors (1246053528).

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

663625152 is a wasteful number, since it uses less digits than its factorization.

663625152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4570 (or 4557 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 663625152 is about 25760.9229648318. The cubic root of 663625152 is about 872.2499353699.

The spelling of 663625152 in words is "six hundred sixty-three million, six hundred twenty-five thousand, one hundred fifty-two".