712505 has 4 divisors (see below), whose sum is σ = 855012. Its totient is φ = 570000.

The previous prime is 712499. The next prime is 712507. The reversal of 712505 is 505217.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 505217 = 59 ⋅8563.

It can be written as a sum of positive squares in 2 ways, for example, as 246016 + 466489 = 496^2 + 683^2 .

It is not a de Polignac number, because 712505 - 2⁴ = 712489 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 712505.

It is not an unprimeable number, because it can be changed into a prime (712507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71246 + ... + 71255.

It is an arithmetic number, because the mean of its divisors is an integer number (213753).

2⁷¹²⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

712505 is a deficient number, since it is larger than the sum of its proper divisors (142507).

712505 is a wasteful number, since it uses less digits than its factorization.

712505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142506.

The product of its (nonzero) digits is 350, while the sum is 20.

The square root of 712505 is about 844.1001125459. The cubic root of 712505 is about 89.3160083108.

The spelling of 712505 in words is "seven hundred twelve thousand, five hundred five".