666360455 has 16 divisors (see below), whose sum is σ = 817344000. Its totient is φ = 521373600.

The previous prime is 666360449. The next prime is 666360473. The reversal of 666360455 is 554063666.

It is a happy number.

It is not a de Polignac number, because 666360455 - 2⁸ = 666360199 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 53030 + ... + 64380.

It is an arithmetic number, because the mean of its divisors is an integer number (51084000).

Almost surely, 2^666360455 is an apocalyptic number.

666360455 is a deficient number, since it is larger than the sum of its proper divisors (150983545).

666360455 is a wasteful number, since it uses less digits than its factorization.

666360455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11614.

The product of its (nonzero) digits is 388800, while the sum is 41.

The square root of 666360455 is about 25813.9585302216. The cubic root of 666360455 is about 873.4466939881.

The spelling of 666360455 in words is "six hundred sixty-six million, three hundred sixty thousand, four hundred fifty-five".