712061281 has 4 divisors (see below), whose sum is σ = 715117572. Its totient is φ = 709004992.

The previous prime is 712061261. The next prime is 712061291. The reversal of 712061281 is 182160217.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 182160217 = 281 ⋅648257.

It can be written as a sum of positive squares in 2 ways, for example, as 198359056 + 513702225 = 14084^2 + 22665^2 .

It is a cyclic number.

It is not a de Polignac number, because 712061281 - 2²⁵ = 678506849 is a prime.

It is a super-2 number, since 2×712061281² = 1014062535798721922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (712061221) 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, 1527796 + ... + 1528261.

It is an arithmetic number, because the mean of its divisors is an integer number (178779393).

Almost surely, 2^712061281 is an apocalyptic number.

It is an amenable number.

712061281 is a deficient number, since it is larger than the sum of its proper divisors (3056291).

712061281 is a wasteful number, since it uses less digits than its factorization.

712061281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3056290.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 712061281 is about 26684.4764048313. The cubic root of 712061281 is about 892.9746367382.

The spelling of 712061281 in words is "seven hundred twelve million, sixty-one thousand, two hundred eighty-one".