663536494 has 8 divisors (see below), whose sum is σ = 995433048. Its totient is φ = 331725480.

The previous prime is 663536441. The next prime is 663536507. The reversal of 663536494 is 494635366.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4069 + ... + 36655.

It is an arithmetic number, because the mean of its divisors is an integer number (124429131).

Almost surely, 2^663536494 is an apocalyptic number.

663536494 is a deficient number, since it is larger than the sum of its proper divisors (331896554).

663536494 is a wasteful number, since it uses less digits than its factorization.

663536494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42770.

The product of its digits is 1399680, while the sum is 46.

The square root of 663536494 is about 25759.2021227366. The cubic root of 663536494 is about 872.2110904595.

The spelling of 663536494 in words is "six hundred sixty-three million, five hundred thirty-six thousand, four hundred ninety-four".