663115199 has 4 divisors (see below), whose sum is σ = 666481464. Its totient is φ = 659748936.

The previous prime is 663115157. The next prime is 663115213. The reversal of 663115199 is 991511366.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 663115199 - 2²⁰ = 662066623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663165199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1682837 + ... + 1683230.

It is an arithmetic number, because the mean of its divisors is an integer number (166620366).

Almost surely, 2^663115199 is an apocalyptic number.

663115199 is a deficient number, since it is larger than the sum of its proper divisors (3366265).

663115199 is a wasteful number, since it uses less digits than its factorization.

663115199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3366264.

The product of its digits is 43740, while the sum is 41.

The square root of 663115199 is about 25751.0232612221. The cubic root of 663115199 is about 872.0264555668.

The spelling of 663115199 in words is "six hundred sixty-three million, one hundred fifteen thousand, one hundred ninety-nine".