1668327375 has 128 divisors (see below), whose sum is σ = 3328625664. Its totient is φ = 731328000.

The previous prime is 1668327371. The next prime is 1668327377. The reversal of 1668327375 is 5737238661.

It is not a de Polignac number, because 1668327375 - 2² = 1668327371 is a prime.

Its product of digits (1270080) is a multiple of the sum of its prime divisors (672).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668327371) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2841832 + ... + 2842418.

It is an arithmetic number, because the mean of its divisors is an integer number (26004888).

Almost surely, 2^1668327375 is an apocalyptic number.

1668327375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1668327375 is a deficient number, since it is larger than the sum of its proper divisors (1660298289).

1668327375 is a wasteful number, since it uses less digits than its factorization.

1668327375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682 (or 672 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 48.

The square root of 1668327375 is about 40845.1634223686. The cubic root of 1668327375 is about 1186.0247682626.

The spelling of 1668327375 in words is "one billion, six hundred sixty-eight million, three hundred twenty-seven thousand, three hundred seventy-five".