666541596 has 48 divisors (see below), whose sum is σ = 1780289280. Its totient is φ = 190135680.

The previous prime is 666541583. The next prime is 666541607. The reversal of 666541596 is 695145666.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 49336 + ... + 61376.

It is an arithmetic number, because the mean of its divisors is an integer number (37089360).

Almost surely, 2^666541596 is an apocalyptic number.

It is an amenable number.

666541596 is an abundant number, since it is smaller than the sum of its proper divisors (1113747684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

666541596 is a wasteful number, since it uses less digits than its factorization.

666541596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12714 (or 12712 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 48.

The square root of 666541596 is about 25817.4668780653. The cubic root of 666541596 is about 873.5258316741.

The spelling of 666541596 in words is "six hundred sixty-six million, five hundred forty-one thousand, five hundred ninety-six".