663962404 has 48 divisors (see below), whose sum is σ = 1408579200. Its totient is φ = 267333120.

The previous prime is 663962389. The next prime is 663962437. The reversal of 663962404 is 404269366.

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 15 ways as a sum of consecutive naturals, for example, 389947 + ... + 391645.

It is an arithmetic number, because the mean of its divisors is an integer number (29345400).

Almost surely, 2^663962404 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 663962404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (704289600).

663962404 is an abundant number, since it is smaller than the sum of its proper divisors (744616796).

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

663962404 is a wasteful number, since it uses less digits than its factorization.

663962404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2548 (or 2546 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 40.

The square root of 663962404 is about 25767.4679392446. The cubic root of 663962404 is about 872.3976684773.

The spelling of 663962404 in words is "six hundred sixty-three million, nine hundred sixty-two thousand, four hundred four".