663513055 has 8 divisors (see below), whose sum is σ = 799724592. Its totient is φ = 528471168.

The previous prime is 663513049. The next prime is 663513101. The reversal of 663513055 is 550315366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 663513055 - 2⁵ = 663513023 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 663513055.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291162 + ... + 293431.

It is an arithmetic number, because the mean of its divisors is an integer number (99965574).

Almost surely, 2^663513055 is an apocalyptic number.

663513055 is a deficient number, since it is larger than the sum of its proper divisors (136211537).

663513055 is a wasteful number, since it uses less digits than its factorization.

663513055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584825.

The product of its (nonzero) digits is 40500, while the sum is 34.

The square root of 663513055 is about 25758.7471550928. The cubic root of 663513055 is about 872.2008202399.

The spelling of 663513055 in words is "six hundred sixty-three million, five hundred thirteen thousand, fifty-five".