646662883 has 16 divisors (see below), whose sum is σ = 677585920. Its totient is φ = 616442400.

The previous prime is 646662869. The next prime is 646662893. The reversal of 646662883 is 388266646.

It is a happy number.

646662883 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 646662883 - 2²⁹ = 109791971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (646662803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 712516 + ... + 713422.

It is an arithmetic number, because the mean of its divisors is an integer number (42349120).

Almost surely, 2^646662883 is an apocalyptic number.

646662883 is a deficient number, since it is larger than the sum of its proper divisors (30923037).

646662883 is a wasteful number, since it uses less digits than its factorization.

646662883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1258.

The product of its digits is 1990656, while the sum is 49.

The square root of 646662883 is about 25429.5671020959. The cubic root of 646662883 is about 864.7541297254.

The spelling of 646662883 in words is "six hundred forty-six million, six hundred sixty-two thousand, eight hundred eighty-three".