641833456 has 20 divisors (see below), whose sum is σ = 1356602904. Its totient is φ = 291742400.

The previous prime is 641833441. The next prime is 641833459. The reversal of 641833456 is 654338146.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641833459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1823215 + ... + 1823566.

Almost surely, 2^641833456 is an apocalyptic number.

It is an amenable number.

641833456 is an abundant number, since it is smaller than the sum of its proper divisors (714769448).

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

641833456 is a wasteful number, since it uses less digits than its factorization.

641833456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3646800 (or 3646794 counting only the distinct ones).

The product of its digits is 207360, while the sum is 40.

The square root of 641833456 is about 25334.4322217807. The cubic root of 641833456 is about 862.5960208437.

The spelling of 641833456 in words is "six hundred forty-one million, eight hundred thirty-three thousand, four hundred fifty-six".