712781611 has 4 divisors (see below), whose sum is σ = 718222824. Its totient is φ = 707340400.

The previous prime is 712781539. The next prime is 712781621. The reversal of 712781611 is 116187217.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 116187217 = 3469 ⋅33493.

It is a cyclic number.

It is not a de Polignac number, because 712781611 - 2¹³ = 712773419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (712781621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2720410 + ... + 2720671.

It is an arithmetic number, because the mean of its divisors is an integer number (179555706).

Almost surely, 2^712781611 is an apocalyptic number.

712781611 is a deficient number, since it is larger than the sum of its proper divisors (5441213).

712781611 is a wasteful number, since it uses less digits than its factorization.

712781611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5441212.

The product of its digits is 4704, while the sum is 34.

The square root of 712781611 is about 26697.9701662879. The cubic root of 712781611 is about 893.2756499876.

The spelling of 712781611 in words is "seven hundred twelve million, seven hundred eighty-one thousand, six hundred eleven".