641594854 has 8 divisors (see below), whose sum is σ = 963953928. Its totient is φ = 320276880.

The previous prime is 641594827. The next prime is 641594857. The reversal of 641594854 is 458495146.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641594857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258732 + ... + 261199.

It is an arithmetic number, because the mean of its divisors is an integer number (120494241).

Almost surely, 2^641594854 is an apocalyptic number.

641594854 is a deficient number, since it is larger than the sum of its proper divisors (322359074).

641594854 is a wasteful number, since it uses less digits than its factorization.

641594854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520550.

The product of its digits is 691200, while the sum is 46.

The square root of 641594854 is about 25329.7227383167. The cubic root of 641594854 is about 862.4891173870.

The spelling of 641594854 in words is "six hundred forty-one million, five hundred ninety-four thousand, eight hundred fifty-four".