641434617 has 12 divisors (see below), whose sum is σ = 940346160. Its totient is φ = 421240248.

The previous prime is 641434613. The next prime is 641434631. The reversal of 641434617 is 716434146.

641434617 is a `hidden beast` number, since 6 + 4 + 1 + 4 + 34 + 617 = 666.

It is not a de Polignac number, because 641434617 - 2² = 641434613 is a prime.

It is a super-2 number, since 2×641434617² = 822876735771873378, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641434613) 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 11 ways as a sum of consecutive naturals, for example, 531267 + ... + 532472.

It is an arithmetic number, because the mean of its divisors is an integer number (78362180).

Almost surely, 2^641434617 is an apocalyptic number.

641434617 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

641434617 is a deficient number, since it is larger than the sum of its proper divisors (298911543).

641434617 is a wasteful number, since it uses less digits than its factorization.

641434617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063812 (or 1063809 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 641434617 is about 25326.5595176289. The cubic root of 641434617 is about 862.4173097789.

The spelling of 641434617 in words is "six hundred forty-one million, four hundred thirty-four thousand, six hundred seventeen".