743273309689 has 9 divisors (see below), whose sum is σ = 745550246469. Its totient is φ = 741003313500.

The previous prime is 743273309677. The next prime is 743273309693. The reversal of 743273309689 is 986903372347.

The square root of 743273309689 is 862133.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 743273309689 - 2¹³ = 743273301497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (743273309609) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 330195814 + ... + 330198064.

Almost surely, 2^743273309689 is an apocalyptic number.

743273309689 is the 862133-rd square number.

743273309689 is the 431067-th centered octagonal number.

It is an amenable number.

743273309689 is a deficient number, since it is larger than the sum of its proper divisors (2276936780).

743273309689 is an frugal number, since it uses more digits than its factorization.

743273309689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5268 (or 2634 counting only the distinct ones).

The product of its (nonzero) digits is 41150592, while the sum is 61.

The spelling of 743273309689 in words is "seven hundred forty-three billion, two hundred seventy-three million, three hundred nine thousand, six hundred eighty-nine".