666536795 has 8 divisors (see below), whose sum is σ = 819352800. Its totient is φ = 520223680.

The previous prime is 666536791. The next prime is 666536807. The reversal of 666536795 is 597635666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 666536795 - 2² = 666536791 is a prime.

It is not an unprimeable number, because it can be changed into a prime (666536791) 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, 1625495 + ... + 1625904.

It is an arithmetic number, because the mean of its divisors is an integer number (102419100).

Almost surely, 2^666536795 is an apocalyptic number.

666536795 is a deficient number, since it is larger than the sum of its proper divisors (152816005).

666536795 is a wasteful number, since it uses less digits than its factorization.

666536795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3251445.

The product of its digits is 6123600, while the sum is 53.

The square root of 666536795 is about 25817.3738982105. The cubic root of 666536795 is about 873.5237343768.

The spelling of 666536795 in words is "six hundred sixty-six million, five hundred thirty-six thousand, seven hundred ninety-five".