641719312 has 20 divisors (see below), whose sum is σ = 1338972460. Its totient is φ = 296178048.

The previous prime is 641719301. The next prime is 641719327. The reversal of 641719312 is 213917146.

641719312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 364962816 + 276756496 = 19104^2 + 16636^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1542387 + ... + 1542802.

It is an arithmetic number, because the mean of its divisors is an integer number (66948623).

Almost surely, 2^641719312 is an apocalyptic number.

It is an amenable number.

641719312 is an abundant number, since it is smaller than the sum of its proper divisors (697253148).

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

641719312 is a wasteful number, since it uses less digits than its factorization.

641719312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3085210 (or 3085204 counting only the distinct ones).

The product of its digits is 9072, while the sum is 34.

The square root of 641719312 is about 25332.1793772269. The cubic root of 641719312 is about 862.5448829685.

The spelling of 641719312 in words is "six hundred forty-one million, seven hundred nineteen thousand, three hundred twelve".