641385241 has 12 divisors (see below), whose sum is σ = 737449216. Its totient is φ = 546439680.

The previous prime is 641385229. The next prime is 641385247. The reversal of 641385241 is 142583146.

It is not a de Polignac number, because 641385241 - 2⁵ = 641385209 is a prime.

It is a super-2 number, since 2×641385241² = 822750054745256162, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 641385197 and 641385206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641385247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1000281 + ... + 1000921.

Almost surely, 2^641385241 is an apocalyptic number.

It is an amenable number.

641385241 is a deficient number, since it is larger than the sum of its proper divisors (96063975).

641385241 is an frugal number, since it uses more digits than its factorization.

641385241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512 (or 871 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 641385241 is about 25325.5847119074. The cubic root of 641385241 is about 862.3951803165.

The spelling of 641385241 in words is "six hundred forty-one million, three hundred eighty-five thousand, two hundred forty-one".