663665053 has 8 divisors (see below), whose sum is σ = 679459968. Its totient is φ = 647886624.

The previous prime is 663665021. The next prime is 663665059. The reversal of 663665053 is 350566366.

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 663665053 - 2⁵ = 663665021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 663664997 and 663665015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663665059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123225 + ... + 128497.

It is an arithmetic number, because the mean of its divisors is an integer number (84932496).

Almost surely, 2^663665053 is an apocalyptic number.

It is an amenable number.

663665053 is a deficient number, since it is larger than the sum of its proper divisors (15794915).

663665053 is a wasteful number, since it uses less digits than its factorization.

663665053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8243.

The product of its (nonzero) digits is 291600, while the sum is 40.

The square root of 663665053 is about 25761.6974013748. The cubic root of 663665053 is about 872.2674165976.

The spelling of 663665053 in words is "six hundred sixty-three million, six hundred sixty-five thousand, fifty-three".