711413981 has 4 divisors (see below), whose sum is σ = 721159452. Its totient is φ = 701668512.

The previous prime is 711413959. The next prime is 711414013. The reversal of 711413981 is 189314117.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 187416100 + 523997881 = 13690^2 + 22891^2 .

It is a cyclic number.

It is not a de Polignac number, because 711413981 - 2¹⁴ = 711397597 is a prime.

It is a super-2 number, since 2×711413981² = 1012219704724536722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (711413951) 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, 4872626 + ... + 4872771.

It is an arithmetic number, because the mean of its divisors is an integer number (180289863).

Almost surely, 2^711413981 is an apocalyptic number.

It is an amenable number.

711413981 is a deficient number, since it is larger than the sum of its proper divisors (9745471).

711413981 is an equidigital number, since it uses as much as digits as its factorization.

711413981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9745470.

The product of its digits is 6048, while the sum is 35.

The square root of 711413981 is about 26672.3448725454. The cubic root of 711413981 is about 892.7039682171.

The spelling of 711413981 in words is "seven hundred eleven million, four hundred thirteen thousand, nine hundred eighty-one".