663601255 has 8 divisors (see below), whose sum is σ = 797780592. Its totient is φ = 529908288.

The previous prime is 663601247. The next prime is 663601271. The reversal of 663601255 is 552106366.

663601255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 663601255 - 2³ = 663601247 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 663601255.

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, 118582 + ... + 124051.

It is an arithmetic number, because the mean of its divisors is an integer number (99722574).

Almost surely, 2^663601255 is an apocalyptic number.

663601255 is a deficient number, since it is larger than the sum of its proper divisors (134179337).

663601255 is a wasteful number, since it uses less digits than its factorization.

663601255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243185.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 663601255 is about 25760.4591379890. The cubic root of 663601255 is about 872.2394653996.

The spelling of 663601255 in words is "six hundred sixty-three million, six hundred one thousand, two hundred fifty-five".