641601339 has 4 divisors (see below), whose sum is σ = 855468456. Its totient is φ = 427734224.

The previous prime is 641601319. The next prime is 641601347. The reversal of 641601339 is 933106146.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 641601339 - 2²⁹ = 104730427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (641601319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106933554 + ... + 106933559.

It is an arithmetic number, because the mean of its divisors is an integer number (213867114).

Almost surely, 2^641601339 is an apocalyptic number.

641601339 is a deficient number, since it is larger than the sum of its proper divisors (213867117).

641601339 is a wasteful number, since it uses less digits than its factorization.

641601339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213867116.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 641601339 is about 25329.8507496590. The cubic root of 641601339 is about 862.4920232827.

The spelling of 641601339 in words is "six hundred forty-one million, six hundred one thousand, three hundred thirty-nine".