641683545 has 16 divisors (see below), whose sum is σ = 1036115520. Its totient is φ = 339090624.

The previous prime is 641683531. The next prime is 641683573. The reversal of 641683545 is 545386146.

641683545 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 641683545 - 2⁴ = 641683529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 641683497 and 641683506.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194599 + ... + 197868.

It is an arithmetic number, because the mean of its divisors is an integer number (64757220).

Almost surely, 2^641683545 is an apocalyptic number.

It is an amenable number.

641683545 is a deficient number, since it is larger than the sum of its proper divisors (394431975).

641683545 is a wasteful number, since it uses less digits than its factorization.

641683545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392584.

The product of its digits is 345600, while the sum is 42.

The square root of 641683545 is about 25331.4734076011. The cubic root of 641683545 is about 862.5288576776.

The spelling of 641683545 in words is "six hundred forty-one million, six hundred eighty-three thousand, five hundred forty-five".