711987677 has 4 divisors (see below), whose sum is σ = 712094940. Its totient is φ = 711880416.

The previous prime is 711987667. The next prime is 711987697. The reversal of 711987677 is 776789117.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 776789117 = 13 ⋅59753009.

It can be written as a sum of positive squares in 2 ways, for example, as 374383801 + 337603876 = 19349^2 + 18374^2 .

It is a cyclic number.

It is not a de Polignac number, because 711987677 - 2¹⁸ = 711725533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (711987667) 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, 42968 + ... + 57185.

It is an arithmetic number, because the mean of its divisors is an integer number (178023735).

Almost surely, 2^711987677 is an apocalyptic number.

It is an amenable number.

711987677 is a deficient number, since it is larger than the sum of its proper divisors (107263).

711987677 is a wasteful number, since it uses less digits than its factorization.

711987677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107262.

The product of its digits is 1037232, while the sum is 53.

The square root of 711987677 is about 26683.0972152784. The cubic root of 711987677 is about 892.9438674904.

The spelling of 711987677 in words is "seven hundred eleven million, nine hundred eighty-seven thousand, six hundred seventy-seven".