712540 has 24 divisors (see below), whose sum is σ = 1562400. Its totient is φ = 272448.

The previous prime is 712531. The next prime is 712561. The reversal of 712540 is 45217.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 315 + ... + 1234.

It is an arithmetic number, because the mean of its divisors is an integer number (65100).

2⁷¹²⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

712540 is an abundant number, since it is smaller than the sum of its proper divisors (849860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

712540 is a wasteful number, since it uses less digits than its factorization.

712540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581 (or 1579 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 712540 is about 844.1208444293. The cubic root of 712540 is about 89.3174707609.

Adding to 712540 its reverse (45217), we get a palindrome (757757).

The spelling of 712540 in words is "seven hundred twelve thousand, five hundred forty".