641330371 has 16 divisors (see below), whose sum is σ = 710309376. Its totient is φ = 578985000.

The previous prime is 641330363. The next prime is 641330381. The reversal of 641330371 is 173033146.

It is a happy number.

It is not a de Polignac number, because 641330371 - 2³ = 641330363 is a prime.

It is a super-2 number, since 2×641330371² = 822609289533995282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641330381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199386 + ... + 202576.

It is an arithmetic number, because the mean of its divisors is an integer number (44394336).

Almost surely, 2^641330371 is an apocalyptic number.

641330371 is a deficient number, since it is larger than the sum of its proper divisors (68979005).

641330371 is a wasteful number, since it uses less digits than its factorization.

641330371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3375 (or 3353 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 641330371 is about 25324.5013968686. The cubic root of 641330371 is about 862.3705872066.

The spelling of 641330371 in words is "six hundred forty-one million, three hundred thirty thousand, three hundred seventy-one".