641713782 has 32 divisors (see below), whose sum is σ = 1299602304. Its totient is φ = 211219200.

The previous prime is 641713781. The next prime is 641713789. The reversal of 641713782 is 287317146.

It is a self number, because there is not a number n which added to its sum of digits gives 641713782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641713781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 331357 + ... + 333287.

It is an arithmetic number, because the mean of its divisors is an integer number (40612572).

Almost surely, 2^641713782 is an apocalyptic number.

641713782 is an abundant number, since it is smaller than the sum of its proper divisors (657888522).

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

641713782 is a wasteful number, since it uses less digits than its factorization.

641713782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2604.

The product of its digits is 56448, while the sum is 39.

The square root of 641713782 is about 25332.0702272830. The cubic root of 641713782 is about 862.5424053085.

The spelling of 641713782 in words is "six hundred forty-one million, seven hundred thirteen thousand, seven hundred eighty-two".