641680143 has 32 divisors (see below), whose sum is σ = 945079296. Its totient is φ = 384801408.

The previous prime is 641680111. The next prime is 641680183. The reversal of 641680143 is 341086146.

It is not a de Polignac number, because 641680143 - 2⁵ = 641680111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641680183) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 518121 + ... + 519357.

It is an arithmetic number, because the mean of its divisors is an integer number (29533728).

Almost surely, 2^641680143 is an apocalyptic number.

641680143 is a deficient number, since it is larger than the sum of its proper divisors (303399153).

641680143 is a wasteful number, since it uses less digits than its factorization.

641680143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 641680143 is about 25331.4062578452. The cubic root of 641680143 is about 862.5273333913.

The spelling of 641680143 in words is "six hundred forty-one million, six hundred eighty thousand, one hundred forty-three".