766916671 has 2 divisors, whose sum is σ = 766916672. Its totient is φ = 766916670.

The previous prime is 766916651. The next prime is 766916701. The reversal of 766916671 is 176619667.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 766916671 - 2¹¹ = 766914623 is a prime.

It is a super-2 number, since 2×766916671² = 1176322360515444482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (766916651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383458335 + 383458336.

It is an arithmetic number, because the mean of its divisors is an integer number (383458336).

Almost surely, 2^766916671 is an apocalyptic number.

766916671 is a deficient number, since it is larger than the sum of its proper divisors (1).

766916671 is an equidigital number, since it uses as much as digits as its factorization.

766916671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 571536, while the sum is 49.

The square root of 766916671 is about 27693.2603894883. The cubic root of 766916671 is about 915.3406004028.

The spelling of 766916671 in words is "seven hundred sixty-six million, nine hundred sixteen thousand, six hundred seventy-one".