663089040 has 60 divisors (see below), whose sum is σ = 2226876444. Its totient is φ = 176823552.

The previous prime is 663089027. The next prime is 663089051. The reversal of 663089040 is 40980366.

It can be written as a sum of positive squares in 2 ways, for example, as 158457744 + 504631296 = 12588^2 + 22464^2 .

It is a tau number, because it is divible by the number of its divisors (60).

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

It is a junction number, because it is equal to n+sod(n) for n = 663088986 and 663089004.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 459759 + ... + 461198.

Almost surely, 2^663089040 is an apocalyptic number.

663089040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

663089040 is an abundant number, since it is smaller than the sum of its proper divisors (1563787404).

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

663089040 is a wasteful number, since it uses less digits than its factorization.

663089040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920976 (or 920967 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 663089040 is about 25750.5153346491. The cubic root of 663089040 is about 872.0149886602.

The spelling of 663089040 in words is "six hundred sixty-three million, eighty-nine thousand, forty".