663320475 has 24 divisors (see below), whose sum is σ = 1218545520. Its totient is φ = 353770560.

The previous prime is 663320459. The next prime is 663320507. The reversal of 663320475 is 574023366.

It is not a de Polignac number, because 663320475 - 2⁴ = 663320459 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 490674 + ... + 492023.

It is an arithmetic number, because the mean of its divisors is an integer number (50772730).

Almost surely, 2^663320475 is an apocalyptic number.

663320475 is a deficient number, since it is larger than the sum of its proper divisors (555225045).

663320475 is a wasteful number, since it uses less digits than its factorization.

663320475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982716 (or 982705 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 36.

The square root of 663320475 is about 25755.0087361663. The cubic root of 663320475 is about 872.1164286890.

The spelling of 663320475 in words is "six hundred sixty-three million, three hundred twenty thousand, four hundred seventy-five".