641774716 has 24 divisors (see below), whose sum is σ = 1228437504. Its totient is φ = 290946480.

The previous prime is 641774713. The next prime is 641774779. The reversal of 641774716 is 617477146.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641774713) 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 7 ways as a sum of consecutive naturals, for example, 2190 + ... + 35893.

It is an arithmetic number, because the mean of its divisors is an integer number (51184896).

Almost surely, 2^641774716 is an apocalyptic number.

It is an amenable number.

641774716 is a deficient number, since it is larger than the sum of its proper divisors (586662788).

641774716 is a wasteful number, since it uses less digits than its factorization.

641774716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38481 (or 38479 counting only the distinct ones).

The product of its digits is 197568, while the sum is 43.

The square root of 641774716 is about 25333.2729034367. The cubic root of 641774716 is about 862.5697053795.

The spelling of 641774716 in words is "six hundred forty-one million, seven hundred seventy-four thousand, seven hundred sixteen".