• 712 can be written using four 4's:

712 has 8 divisors (see below), whose sum is σ = 1350. Its totient is φ = 352.

The previous prime is 709. The next prime is 719. The reversal of 712 is 217.

712 is nontrivially palindromic in base 12.

It can be written as a sum of positive squares in only one way, i.e., 676 + 36 = 26^2 + 6^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a magnanimous number.

712 is an undulating number in base 12.

It is a plaindrome in base 14.

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37 + ... + 52.

It is an amenable number.

712 is a deficient number, since it is larger than the sum of its proper divisors (638).

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

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

The sum of its prime factors is 95 (or 91 counting only the distinct ones).

The product of its digits is 14, while the sum is 10.

The square root of 712 is about 26.6833281283. The cubic root of 712 is about 8.9294901912.

Adding to 712 its reverse (217), we get a palindrome (929).

The spelling of 712 in words is "seven hundred twelve", and thus it is an aban number, an iban number, and an oban number.

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