663577390 has 16 divisors (see below), whose sum is σ = 1365073632. Its totient is φ = 227512224.

The previous prime is 663577379. The next prime is 663577417. The reversal of 663577390 is 93775366.

It is a self number, because there is not a number n which added to its sum of digits gives 663577390.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4739769 + ... + 4739908.

It is an arithmetic number, because the mean of its divisors is an integer number (85317102).

Almost surely, 2^663577390 is an apocalyptic number.

663577390 is an abundant number, since it is smaller than the sum of its proper divisors (701496242).

663577390 is a wasteful number, since it uses less digits than its factorization.

663577390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9479691.

The product of its (nonzero) digits is 714420, while the sum is 46.

The square root of 663577390 is about 25759.9959239127. The cubic root of 663577390 is about 872.2290091986.

The spelling of 663577390 in words is "six hundred sixty-three million, five hundred seventy-seven thousand, three hundred ninety".