641612469 has 16 divisors (see below), whose sum is σ = 861408000. Its totient is φ = 424790016.

The previous prime is 641612467. The next prime is 641612513. The reversal of 641612469 is 964216146.

It is not a de Polignac number, because 641612469 - 2¹ = 641612467 is a prime.

It is a super-2 number, since 2×641612469² = 823333120752551922, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641612467) 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 15 ways as a sum of consecutive naturals, for example, 320937 + ... + 322929.

It is an arithmetic number, because the mean of its divisors is an integer number (53838000).

Almost surely, 2^641612469 is an apocalyptic number.

It is an amenable number.

641612469 is a deficient number, since it is larger than the sum of its proper divisors (219795531).

641612469 is a wasteful number, since it uses less digits than its factorization.

641612469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2684.

The product of its digits is 62208, while the sum is 39.

The square root of 641612469 is about 25330.0704499612. The cubic root of 641612469 is about 862.4970105336.

The spelling of 641612469 in words is "six hundred forty-one million, six hundred twelve thousand, four hundred sixty-nine".