663065040 has 160 divisors (see below), whose sum is σ = 2360563200. Its totient is φ = 152271360.

The previous prime is 663065027. The next prime is 663065057. The reversal of 663065040 is 40560366.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 663064989 and 663065007.

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, 43551 + ... + 56769.

It is an arithmetic number, because the mean of its divisors is an integer number (14753520).

Almost surely, 2^663065040 is an apocalyptic number.

663065040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663065040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1180281600).

663065040 is an abundant number, since it is smaller than the sum of its proper divisors (1697498160).

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

663065040 is a wasteful number, since it uses less digits than its factorization.

663065040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13265 (or 13259 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 663065040 is about 25750.0493203411. The cubic root of 663065040 is about 872.0044678951.

The spelling of 663065040 in words is "six hundred sixty-three million, sixty-five thousand, forty".