666486364 has 24 divisors (see below), whose sum is σ = 1218833280. Its totient is φ = 318290544.

The previous prime is 666486349. The next prime is 666486371. The reversal of 666486364 is 463684666.

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, 63087 + ... + 72889.

It is an arithmetic number, because the mean of its divisors is an integer number (50784720).

Almost surely, 2^666486364 is an apocalyptic number.

It is an amenable number.

666486364 is a deficient number, since it is larger than the sum of its proper divisors (552346916).

666486364 is a wasteful number, since it uses less digits than its factorization.

666486364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10569 (or 10567 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 49.

The square root of 666486364 is about 25816.3971924821. The cubic root of 666486364 is about 873.5017031917.

The spelling of 666486364 in words is "six hundred sixty-six million, four hundred eighty-six thousand, three hundred sixty-four".