641063745 has 48 divisors (see below), whose sum is σ = 1275605760. Its totient is φ = 291745152.

The previous prime is 641063729. The next prime is 641063747. The reversal of 641063745 is 547360146.

It is a happy number.

641063745 is a `hidden beast` number, since 6 + 4 + 10 + 637 + 4 + 5 = 666.

641063745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 641063745 - 2⁴ = 641063729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (641063747) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 67692 + ... + 76578.

It is an arithmetic number, because the mean of its divisors is an integer number (26575120).

Almost surely, 2^641063745 is an apocalyptic number.

It is an amenable number.

641063745 is a deficient number, since it is larger than the sum of its proper divisors (634542015).

641063745 is a wasteful number, since it uses less digits than its factorization.

641063745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9134 (or 9131 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 641063745 is about 25319.2366591096. The cubic root of 641063745 is about 862.2510636342.

The spelling of 641063745 in words is "six hundred forty-one million, sixty-three thousand, seven hundred forty-five".