1668628675 has 12 divisors (see below), whose sum is σ = 2364685456. Its totient is φ = 1144202400.

The previous prime is 1668628667. The next prime is 1668628711. The reversal of 1668628675 is 5768268661.

It is not a de Polignac number, because 1668628675 - 2³ = 1668628667 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4767336 + ... + 4767685.

Almost surely, 2^1668628675 is an apocalyptic number.

1668628675 is a deficient number, since it is larger than the sum of its proper divisors (696056781).

1668628675 is an equidigital number, since it uses as much as digits as its factorization.

1668628675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9535038 (or 9535033 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 55.

The square root of 1668628675 is about 40848.8515750443. The cubic root of 1668628675 is about 1186.0961626739.

The spelling of 1668628675 in words is "one billion, six hundred sixty-eight million, six hundred twenty-eight thousand, six hundred seventy-five".