666654465 has 32 divisors (see below), whose sum is σ = 1130371200. Its totient is φ = 334906880.

The previous prime is 666654451. The next prime is 666654479. The reversal of 666654465 is 564456666.

It is a happy number.

666654465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (666654451) and next prime (666654479).

It is not a de Polignac number, because 666654465 - 2¹⁰ = 666653441 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 855 + ... + 36524.

It is an arithmetic number, because the mean of its divisors is an integer number (35324100).

Almost surely, 2^666654465 is an apocalyptic number.

It is an amenable number.

666654465 is a deficient number, since it is larger than the sum of its proper divisors (463716735).

666654465 is a wasteful number, since it uses less digits than its factorization.

666654465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37457.

The product of its digits is 3110400, while the sum is 48.

The square root of 666654465 is about 25819.6526893760. The cubic root of 666654465 is about 873.5751351350.

The spelling of 666654465 in words is "six hundred sixty-six million, six hundred fifty-four thousand, four hundred sixty-five".