712345 has 4 divisors (see below), whose sum is σ = 854820. Its totient is φ = 569872.

The previous prime is 712339. The next prime is 712357. The reversal of 712345 is 543217.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 254016 + 458329 = 504^2 + 677^2 .

It is a cyclic number.

It is not a de Polignac number, because 712345 - 2¹³ = 704153 is a prime.

712345 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71230 + ... + 71239.

It is an arithmetic number, because the mean of its divisors is an integer number (213705).

2⁷¹²³⁴⁵ is an apocalyptic number.

It is an amenable number.

712345 is a deficient number, since it is larger than the sum of its proper divisors (142475).

712345 is a wasteful number, since it uses less digits than its factorization.

712345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142474.

The product of its digits is 840, while the sum is 22.

The square root of 712345 is about 844.0053317367. The cubic root of 712345 is about 89.3093222144.

The spelling of 712345 in words is "seven hundred twelve thousand, three hundred forty-five".