646026416 has 20 divisors (see below), whose sum is σ = 1430487312. Its totient is φ = 276868416.

The previous prime is 646026413. The next prime is 646026431. The reversal of 646026416 is 614620646.

It is not an unprimeable number, because it can be changed into a prime (646026413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2883935 + ... + 2884158.

Almost surely, 2^646026416 is an apocalyptic number.

It is an amenable number.

646026416 is an abundant number, since it is smaller than the sum of its proper divisors (784460896).

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

646026416 is a wasteful number, since it uses less digits than its factorization.

646026416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5768108 (or 5768102 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 646026416 is about 25417.0497107749. The cubic root of 646026416 is about 864.4703300570.

The spelling of 646026416 in words is "six hundred forty-six million, twenty-six thousand, four hundred sixteen".