663613590 has 32 divisors (see below), whose sum is σ = 1644051456. Its totient is φ = 171254880.

The previous prime is 663613579. The next prime is 663613607. The reversal of 663613590 is 95316366.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 355852 + ... + 357711.

It is an arithmetic number, because the mean of its divisors is an integer number (51376608).

Almost surely, 2^663613590 is an apocalyptic number.

663613590 is an abundant number, since it is smaller than the sum of its proper divisors (980437866).

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

663613590 is a wasteful number, since it uses less digits than its factorization.

663613590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713604.

The product of its (nonzero) digits is 87480, while the sum is 39.

The square root of 663613590 is about 25760.6985541930. The cubic root of 663613590 is about 872.2448697530.

The spelling of 663613590 in words is "six hundred sixty-three million, six hundred thirteen thousand, five hundred ninety".