641272743 has 24 divisors (see below), whose sum is σ = 976255280. Its totient is φ = 404507520.

The previous prime is 641272741. The next prime is 641272769. The reversal of 641272743 is 347272146.

641272743 is a `hidden beast` number, since 641 + 2 + 7 + 2 + 7 + 4 + 3 = 666.

641272743 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 641272743 - 2¹ = 641272741 is a prime.

It is a super-2 number, since 2×641272743² = 822461461829488098, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 641272698 and 641272707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641272741) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172755 + ... + 176427.

Almost surely, 2^641272743 is an apocalyptic number.

641272743 is a deficient number, since it is larger than the sum of its proper divisors (334982537).

641272743 is a wasteful number, since it uses less digits than its factorization.

641272743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4719 (or 4716 counting only the distinct ones).

The product of its digits is 56448, while the sum is 36.

The square root of 641272743 is about 25323.3635799038. The cubic root of 641272743 is about 862.3447564320.

The spelling of 641272743 in words is "six hundred forty-one million, two hundred seventy-two thousand, seven hundred forty-three".