641575343 has 2 divisors, whose sum is σ = 641575344. Its totient is φ = 641575342.

The previous prime is 641575307. The next prime is 641575373. The reversal of 641575343 is 343575146.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-641575343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 641575297 and 641575306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (641575373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320787671 + 320787672.

It is an arithmetic number, because the mean of its divisors is an integer number (320787672).

Almost surely, 2^641575343 is an apocalyptic number.

641575343 is a deficient number, since it is larger than the sum of its proper divisors (1).

641575343 is an equidigital number, since it uses as much as digits as its factorization.

641575343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 38.

The square root of 641575343 is about 25329.3375949708. The cubic root of 641575343 is about 862.4803744887.

The spelling of 641575343 in words is "six hundred forty-one million, five hundred seventy-five thousand, three hundred forty-three".