666795347 has 8 divisors (see below), whose sum is σ = 694025040. Its totient is φ = 639848160.

The previous prime is 666795299. The next prime is 666795361. The reversal of 666795347 is 743597666.

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 666795347 - 2⁸ = 666795091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666795397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65804 + ... + 75257.

It is an arithmetic number, because the mean of its divisors is an integer number (86753130).

Almost surely, 2^666795347 is an apocalyptic number.

666795347 is a deficient number, since it is larger than the sum of its proper divisors (27229693).

666795347 is a wasteful number, since it uses less digits than its factorization.

666795347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141253.

The product of its digits is 5715360, while the sum is 53.

The square root of 666795347 is about 25822.3807384215. The cubic root of 666795347 is about 873.6366674331.

The spelling of 666795347 in words is "six hundred sixty-six million, seven hundred ninety-five thousand, three hundred forty-seven".