666496597 has 8 divisors (see below), whose sum is σ = 718006016. Its totient is φ = 615021552.

The previous prime is 666496591. The next prime is 666496619. The reversal of 666496597 is 795694666.

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 666496597 - 2⁷ = 666496469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666496591) 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 7 ways as a sum of consecutive naturals, for example, 43348 + ... + 56674.

It is an arithmetic number, because the mean of its divisors is an integer number (89750752).

Almost surely, 2^666496597 is an apocalyptic number.

It is an amenable number.

666496597 is a deficient number, since it is larger than the sum of its proper divisors (51509419).

666496597 is a wasteful number, since it uses less digits than its factorization.

666496597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17187.

The product of its digits is 14696640, while the sum is 58.

The square root of 666496597 is about 25816.5953797165. The cubic root of 666496597 is about 873.5061736494.

The spelling of 666496597 in words is "six hundred sixty-six million, four hundred ninety-six thousand, five hundred ninety-seven".