663665102 has 4 divisors (see below), whose sum is σ = 995497656. Its totient is φ = 331832550.

The previous prime is 663665089. The next prime is 663665113. The reversal of 663665102 is 201566366.

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

It is a super-2 number, since 2×663665102² = 880902735225340808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165916274 + ... + 165916277.

It is an arithmetic number, because the mean of its divisors is an integer number (248874414).

Almost surely, 2^663665102 is an apocalyptic number.

663665102 is a deficient number, since it is larger than the sum of its proper divisors (331832554).

663665102 is a wasteful number, since it uses less digits than its factorization.

663665102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331832553.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 663665102 is about 25761.6983523991. The cubic root of 663665102 is about 872.2674380648.

The spelling of 663665102 in words is "six hundred sixty-three million, six hundred sixty-five thousand, one hundred two".