641568803 has 8 divisors (see below), whose sum is σ = 645362640. Its totient is φ = 637786240.

The previous prime is 641568737. The next prime is 641568853. The reversal of 641568803 is 308865146.

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

It is a cyclic number.

It is not a de Polignac number, because 641568803 - 2²⁶ = 574459939 is a prime.

It is a super-2 number, since 2×641568803² = 823221057965705618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641568853) 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, 128783 + ... + 133671.

It is an arithmetic number, because the mean of its divisors is an integer number (80670330).

Almost surely, 2^641568803 is an apocalyptic number.

641568803 is a deficient number, since it is larger than the sum of its proper divisors (3793837).

641568803 is a wasteful number, since it uses less digits than its factorization.

641568803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5637.

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

The square root of 641568803 is about 25329.2084953320. The cubic root of 641568803 is about 862.4774438686.

The spelling of 641568803 in words is "six hundred forty-one million, five hundred sixty-eight thousand, eight hundred three".