666606795 has 32 divisors (see below), whose sum is σ = 1112401920. Its totient is φ = 340485120.

The previous prime is 666606757. The next prime is 666606797. The reversal of 666606795 is 597606666.

It is not a de Polignac number, because 666606795 - 2⁷ = 666606667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (666606797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37716 + ... + 52494.

It is an arithmetic number, because the mean of its divisors is an integer number (34762560).

Almost surely, 2^666606795 is an apocalyptic number.

666606795 is a deficient number, since it is larger than the sum of its proper divisors (445795125).

666606795 is a wasteful number, since it uses less digits than its factorization.

666606795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14915.

The product of its (nonzero) digits is 2449440, while the sum is 51.

The square root of 666606795 is about 25818.7295388445. The cubic root of 666606795 is about 873.5543125942.

The spelling of 666606795 in words is "six hundred sixty-six million, six hundred six thousand, seven hundred ninety-five".