666359616 has 56 divisors (see below), whose sum is σ = 1898704864. Its totient is φ = 205032960.

The previous prime is 666359599. The next prime is 666359627. The reversal of 666359616 is 616953666.

It is a Harshad number since it is a multiple of its sum of digits (48).

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 7 ways as a sum of consecutive naturals, for example, 130990 + ... + 135981.

It is an arithmetic number, because the mean of its divisors is an integer number (33905444).

Almost surely, 2^666359616 is an apocalyptic number.

It is an amenable number.

666359616 is an abundant number, since it is smaller than the sum of its proper divisors (1232345248).

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

666359616 is a wasteful number, since it uses less digits than its factorization.

666359616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266999 (or 266989 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 48.

The square root of 666359616 is about 25813.9422793187. The cubic root of 666359616 is about 873.4463274087.

The spelling of 666359616 in words is "six hundred sixty-six million, three hundred fifty-nine thousand, six hundred sixteen".