663896602 has 8 divisors (see below), whose sum is σ = 1009486836. Its totient is φ = 327400992.

The previous prime is 663896599. The next prime is 663896621. The reversal of 663896602 is 206698366.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 653262481 + 10634121 = 25559^2 + 3261^2 .

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

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, 2273473 + ... + 2273764.

Almost surely, 2^663896602 is an apocalyptic number.

663896602 is a deficient number, since it is larger than the sum of its proper divisors (345590234).

663896602 is a wasteful number, since it uses less digits than its factorization.

663896602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4547312.

The product of its (nonzero) digits is 559872, while the sum is 46.

The square root of 663896602 is about 25766.1910650371. The cubic root of 663896602 is about 872.3688478656.

The spelling of 663896602 in words is "six hundred sixty-three million, eight hundred ninety-six thousand, six hundred two".