646682026 has 8 divisors (see below), whose sum is σ = 970136640. Its totient is φ = 323303148.

The previous prime is 646682017. The next prime is 646682033. The reversal of 646682026 is 620286646.

646682026 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 646682026.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13585 + ... + 38443.

It is an arithmetic number, because the mean of its divisors is an integer number (121267080).

Almost surely, 2^646682026 is an apocalyptic number.

646682026 is a deficient number, since it is larger than the sum of its proper divisors (323454614).

646682026 is a wasteful number, since it uses less digits than its factorization.

646682026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37868.

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 646682026 is about 25429.9434918759. The cubic root of 646682026 is about 864.7626626748.

The spelling of 646682026 in words is "six hundred forty-six million, six hundred eighty-two thousand, twenty-six".