6348375666 has 12 divisors (see below), whose sum is σ = 13754813982. Its totient is φ = 2116125216.

The previous prime is 6348375661. The next prime is 6348375689. The reversal of 6348375666 is 6665738436.

It can be written as a sum of positive squares in only one way, i.e., 3952762641 + 2395613025 = 62871^2 + 48945^2 .

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (6348375661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 176343751 + ... + 176343786.

Almost surely, 2^6348375666 is an apocalyptic number.

6348375666 is an abundant number, since it is smaller than the sum of its proper divisors (7406438316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6348375666 is a wasteful number, since it uses less digits than its factorization.

6348375666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352687545 (or 352687542 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 54.

The square root of 6348375666 is about 79676.6946227063. The cubic root of 6348375666 is about 1851.6299893904.

The spelling of 6348375666 in words is "six billion, three hundred forty-eight million, three hundred seventy-five thousand, six hundred sixty-six".