646682022 has 32 divisors (see below), whose sum is σ = 1642368000. Its totient is φ = 184766184.

The previous prime is 646682017. The next prime is 646682033. The reversal of 646682022 is 220286646.

646682022 is a `hidden beast` number, since 646 + 6 + 8 + 2 + 0 + 2 + 2 = 666.

646682022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 855022 + ... + 855777.

It is an arithmetic number, because the mean of its divisors is an integer number (51324000).

Almost surely, 2^646682022 is an apocalyptic number.

646682022 is an abundant number, since it is smaller than the sum of its proper divisors (995685978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

646682022 is a wasteful number, since it uses less digits than its factorization.

646682022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710817 (or 1710811 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 646682022 is about 25429.9434132284. The cubic root of 646682022 is about 864.7626608918.

It can be divided in two parts, 6466 and 82022, that added together give a palindrome (88488).

The spelling of 646682022 in words is "six hundred forty-six million, six hundred eighty-two thousand, twenty-two".