663470136 has 128 divisors (see below), whose sum is σ = 2135462400. Its totient is φ = 186935040.

The previous prime is 663470081. The next prime is 663470141. The reversal of 663470136 is 631074366.

It is a happy number.

663470136 is a `hidden beast` number, since 6 + 634 + 7 + 0 + 13 + 6 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 663470136.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107371 + ... + 113381.

It is an arithmetic number, because the mean of its divisors is an integer number (16683300).

Almost surely, 2^663470136 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 663470136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1067731200).

663470136 is an abundant number, since it is smaller than the sum of its proper divisors (1471992264).

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

663470136 is a wasteful number, since it uses less digits than its factorization.

663470136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6106 (or 6096 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 663470136 is about 25757.9140459782. The cubic root of 663470136 is about 872.1820138809.

The spelling of 663470136 in words is "six hundred sixty-three million, four hundred seventy thousand, one hundred thirty-six".