711711561 has 16 divisors (see below), whose sum is σ = 1035859968. Its totient is φ = 431072400.

The previous prime is 711711509. The next prime is 711711569. The reversal of 711711561 is 165117117.

It is not a de Polignac number, because 711711561 - 2¹⁰ = 711710537 is a prime.

It is a super-2 number, since 2×711711561² = 1013066692122113442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (711711569) 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 15 ways as a sum of consecutive naturals, for example, 55980 + ... + 67506.

It is an arithmetic number, because the mean of its divisors is an integer number (64741248).

Almost surely, 2^711711561 is an apocalyptic number.

It is an amenable number.

711711561 is a deficient number, since it is larger than the sum of its proper divisors (324148407).

711711561 is a wasteful number, since it uses less digits than its factorization.

711711561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13412.

The product of its digits is 1470, while the sum is 30.

The square root of 711711561 is about 26677.9227264793. The cubic root of 711711561 is about 892.8284216870.

Adding to 711711561 its reverse (165117117), we get a palindrome (876828678).

The spelling of 711711561 in words is "seven hundred eleven million, seven hundred eleven thousand, five hundred sixty-one".