712736 has 12 divisors (see below), whose sum is σ = 1403262. Its totient is φ = 356352.

The previous prime is 712717. The next prime is 712739. The reversal of 712736 is 637217.

It can be written as a sum of positive squares in only one way, i.e., 712336 + 400 = 844^2 + 20^2 .

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 712736.

It is not an unprimeable number, because it can be changed into a prime (712739) by changing a digit.

712736 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11105 + ... + 11168.

2⁷¹²⁷³⁶ is an apocalyptic number.

It is an amenable number.

712736 is a deficient number, since it is larger than the sum of its proper divisors (690526).

712736 is a wasteful number, since it uses less digits than its factorization.

712736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22283 (or 22275 counting only the distinct ones).

The product of its digits is 1764, while the sum is 26.

The square root of 712736 is about 844.2369335678. The cubic root of 712736 is about 89.3256595968.

The spelling of 712736 in words is "seven hundred twelve thousand, seven hundred thirty-six".