712028580665 has 4 divisors (see below), whose sum is σ = 854434296804. Its totient is φ = 569622864528.

The previous prime is 712028580649. The next prime is 712028580673. The reversal of 712028580665 is 566085820217.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 566085820217 = 50033 ⋅11314249.

It can be written as a sum of positive squares in 2 ways, for example, as 469582638121 + 242445942544 = 685261^2 + 492388^2 .

It is a cyclic number.

It is not a de Polignac number, because 712028580665 - 2⁴ = 712028580649 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71202858062 + ... + 71202858071.

It is an arithmetic number, because the mean of its divisors is an integer number (213608574201).

Almost surely, 2^712028580665 is an apocalyptic number.

It is an amenable number.

712028580665 is a deficient number, since it is larger than the sum of its proper divisors (142405716139).

712028580665 is a wasteful number, since it uses less digits than its factorization.

712028580665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142405716138.

The product of its (nonzero) digits is 1612800, while the sum is 50.

The spelling of 712028580665 in words is "seven hundred twelve billion, twenty-eight million, five hundred eighty thousand, six hundred sixty-five".