641568083 has 8 divisors (see below), whose sum is σ = 731562048. Its totient is φ = 557380224.

The previous prime is 641568071. The next prime is 641568089. The reversal of 641568083 is 380865146.

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

It is not a de Polignac number, because 641568083 - 2¹² = 641563987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 641568083.

It is not an unprimeable number, because it can be changed into a prime (641568089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1451291 + ... + 1451732.

It is an arithmetic number, because the mean of its divisors is an integer number (91445256).

Almost surely, 2^641568083 is an apocalyptic number.

641568083 is a deficient number, since it is larger than the sum of its proper divisors (89993965).

641568083 is a wasteful number, since it uses less digits than its factorization.

641568083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2903053.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 641568083 is about 25329.1942824876. The cubic root of 641568083 is about 862.4771212303.

The spelling of 641568083 in words is "six hundred forty-one million, five hundred sixty-eight thousand, eighty-three".