641476782 has 12 divisors (see below), whose sum is σ = 1389866400. Its totient is φ = 213825588.

The previous prime is 641476757. The next prime is 641476813. The reversal of 641476782 is 287674146.

It is a super-2 number, since 2×641476782² = 822984923690151048, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17818782 + ... + 17818817.

It is an arithmetic number, because the mean of its divisors is an integer number (115822200).

Almost surely, 2^641476782 is an apocalyptic number.

641476782 is an abundant number, since it is smaller than the sum of its proper divisors (748389618).

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

641476782 is a wasteful number, since it uses less digits than its factorization.

641476782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35637607 (or 35637604 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 641476782 is about 25327.3919304772. The cubic root of 641476782 is about 862.4362064979.

The spelling of 641476782 in words is "six hundred forty-one million, four hundred seventy-six thousand, seven hundred eighty-two".