666795633 has 32 divisors (see below), whose sum is σ = 1077795840. Its totient is φ = 358188480.

The previous prime is 666795631. The next prime is 666795643. The reversal of 666795633 is 336597666.

It is not a de Polignac number, because 666795633 - 2¹ = 666795631 is a prime.

It is not an unprimeable number, because it can be changed into a prime (666795631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45891 + ... + 58647.

It is an arithmetic number, because the mean of its divisors is an integer number (33681120).

Almost surely, 2^666795633 is an apocalyptic number.

It is an amenable number.

666795633 is a deficient number, since it is larger than the sum of its proper divisors (411000207).

666795633 is a wasteful number, since it uses less digits than its factorization.

666795633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12917.

The product of its digits is 3674160, while the sum is 51.

The square root of 666795633 is about 25822.3862762526. The cubic root of 666795633 is about 873.6367923390.

The spelling of 666795633 in words is "six hundred sixty-six million, seven hundred ninety-five thousand, six hundred thirty-three".