668333630 has 8 divisors (see below), whose sum is σ = 1203000552. Its totient is φ = 267333448.

The previous prime is 668333621. The next prime is 668333693. The reversal of 668333630 is 36333866.

It is a happy number.

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, 33416672 + ... + 33416691.

It is an arithmetic number, because the mean of its divisors is an integer number (150375069).

Almost surely, 2^668333630 is an apocalyptic number.

668333630 is a deficient number, since it is larger than the sum of its proper divisors (534666922).

668333630 is a wasteful number, since it uses less digits than its factorization.

668333630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66833370.

The product of its (nonzero) digits is 139968, while the sum is 38.

The square root of 668333630 is about 25852.1494270786. The cubic root of 668333630 is about 874.3079720105.

The spelling of 668333630 in words is "six hundred sixty-eight million, three hundred thirty-three thousand, six hundred thirty".