6668635 has 8 divisors (see below), whose sum is σ = 8099280. Its totient is φ = 5270304.

The previous prime is 6668617. The next prime is 6668659. The reversal of 6668635 is 5368666.

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

It is a cyclic number.

It is not a de Polignac number, because 6668635 - 2⁵ = 6668603 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7620 + ... + 8449.

It is an arithmetic number, because the mean of its divisors is an integer number (1012410).

Almost surely, 2^6668635 is an apocalyptic number.

6668635 is a deficient number, since it is larger than the sum of its proper divisors (1430645).

6668635 is a wasteful number, since it uses less digits than its factorization.

6668635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16157.

The product of its digits is 155520, while the sum is 40.

The square root of 6668635 is about 2582.3700354519. The cubic root of 6668635 is about 188.2257266794.

The spelling of 6668635 in words is "six million, six hundred sixty-eight thousand, six hundred thirty-five".