641350079 has 2 divisors, whose sum is σ = 641350080. Its totient is φ = 641350078.

The previous prime is 641350043. The next prime is 641350081. The reversal of 641350079 is 970053146.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 641350079 - 2¹² = 641345983 is a prime.

It is a super-2 number, since 2×641350079² = 822659847666612482, which contains 22 as substring.

Together with 641350081, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (641358079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320675039 + 320675040.

It is an arithmetic number, because the mean of its divisors is an integer number (320675040).

Almost surely, 2^641350079 is an apocalyptic number.

641350079 is a deficient number, since it is larger than the sum of its proper divisors (1).

641350079 is an equidigital number, since it uses as much as digits as its factorization.

641350079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 641350079 is about 25324.8905032184. The cubic root of 641350079 is about 862.3794206287.

The spelling of 641350079 in words is "six hundred forty-one million, three hundred fifty thousand, seventy-nine".