663846874 has 8 divisors (see below), whose sum is σ = 995884128. Its totient is φ = 331885500.

The previous prime is 663846839. The next prime is 663846899. The reversal of 663846874 is 478648366.

It is a happy number.

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

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 3 ways as a sum of consecutive naturals, for example, 15249 + ... + 39499.

It is an arithmetic number, because the mean of its divisors is an integer number (124485516).

Almost surely, 2^663846874 is an apocalyptic number.

663846874 is a deficient number, since it is larger than the sum of its proper divisors (332037254).

663846874 is a wasteful number, since it uses less digits than its factorization.

663846874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37940.

The product of its digits is 4644864, while the sum is 52.

The square root of 663846874 is about 25765.2260614961. The cubic root of 663846874 is about 872.3470662402.

The spelling of 663846874 in words is "six hundred sixty-three million, eight hundred forty-six thousand, eight hundred seventy-four".