666470783 has 6 divisors (see below), whose sum is σ = 732567192. Its totient is φ = 605882420.

The previous prime is 666470773. The next prime is 666470789. The reversal of 666470783 is 387074666.

It is not a de Polignac number, because 666470783 - 2⁸ = 666470527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666470789) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 2753891 + ... + 2754132.

It is an arithmetic number, because the mean of its divisors is an integer number (122094532).

Almost surely, 2^666470783 is an apocalyptic number.

666470783 is a deficient number, since it is larger than the sum of its proper divisors (66096409).

666470783 is a wasteful number, since it uses less digits than its factorization.

666470783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5508045 (or 5508034 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 47.

The square root of 666470783 is about 25816.0954251413. The cubic root of 666470783 is about 873.4948962827.

The spelling of 666470783 in words is "six hundred sixty-six million, four hundred seventy thousand, seven hundred eighty-three".