666536299 has 8 divisors (see below), whose sum is σ = 783063792. Its totient is φ = 559331040.

The previous prime is 666536293. The next prime is 666536327. The reversal of 666536299 is 992635666.

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 666536299 - 2⁵ = 666536267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666536293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2330404 + ... + 2330689.

It is an arithmetic number, because the mean of its divisors is an integer number (97882974).

Almost surely, 2^666536299 is an apocalyptic number.

666536299 is a deficient number, since it is larger than the sum of its proper divisors (116527493).

666536299 is a wasteful number, since it uses less digits than its factorization.

666536299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4661117.

The product of its digits is 3149280, while the sum is 52.

The square root of 666536299 is about 25817.3642922743. The cubic root of 666536299 is about 873.5235177007.

The spelling of 666536299 in words is "six hundred sixty-six million, five hundred thirty-six thousand, two hundred ninety-nine".