709045 has 8 divisors (see below), whose sum is σ = 859320. Its totient is φ = 561600.

The previous prime is 709043. The next prime is 709057. The reversal of 709045 is 540907.

It can be written as a sum of positive squares in 4 ways, for example, as 1764 + 707281 = 42^2 + 841^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 709045 - 2¹ = 709043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (709043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106 + ... + 1195.

It is an arithmetic number, because the mean of its divisors is an integer number (107415).

2⁷⁰⁹⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

709045 is a deficient number, since it is larger than the sum of its proper divisors (150275).

709045 is a wasteful number, since it uses less digits than its factorization.

709045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 709045 is about 842.0480983887. The cubic root of 709045 is about 89.1711976424.

The spelling of 709045 in words is "seven hundred nine thousand, forty-five".