712617128 has 16 divisors (see below), whose sum is σ = 1358062260. Its totient is φ = 350467200.

The previous prime is 712617127. The next prime is 712617133. The reversal of 712617128 is 821716217.

712617128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 643028164 + 69588964 = 25358^2 + 8342^2 .

It is a super-2 number, since 2×712617128² = 1015646342237936768, which contains 22 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (712617127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 729653 + ... + 730628.

Almost surely, 2^712617128 is an apocalyptic number.

It is an amenable number.

712617128 is a deficient number, since it is larger than the sum of its proper divisors (645445132).

712617128 is a wasteful number, since it uses less digits than its factorization.

712617128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460348 (or 1460344 counting only the distinct ones).

The product of its digits is 9408, while the sum is 35.

The square root of 712617128 is about 26694.8895483761. The cubic root of 712617128 is about 893.2069333055.

The spelling of 712617128 in words is "seven hundred twelve million, six hundred seventeen thousand, one hundred twenty-eight".