709473073 has 2 divisors, whose sum is σ = 709473074. Its totient is φ = 709473072.

The previous prime is 709473071. The next prime is 709473137. The reversal of 709473073 is 370374907.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 674804529 + 34668544 = 25977^2 + 5888^2 .

It is a cyclic number.

It is not a de Polignac number, because 709473073 - 2¹ = 709473071 is a prime.

Together with 709473071, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (709473071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 354736536 + 354736537.

It is an arithmetic number, because the mean of its divisors is an integer number (354736537).

Almost surely, 2^709473073 is an apocalyptic number.

It is an amenable number.

709473073 is a deficient number, since it is larger than the sum of its proper divisors (1).

709473073 is an equidigital number, since it uses as much as digits as its factorization.

709473073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 111132, while the sum is 40.

The square root of 709473073 is about 26635.9357447791. The cubic root of 709473073 is about 891.8913919426.

The spelling of 709473073 in words is "seven hundred nine million, four hundred seventy-three thousand, seventy-three".