766888667 has 6 divisors (see below), whose sum is σ = 780110628. Its totient is φ = 753887132.

The previous prime is 766888643. The next prime is 766888721.

766888667 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-766888667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (766888607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 106673 + ... + 113634.

It is an arithmetic number, because the mean of its divisors is an integer number (130018438).

Almost surely, 2^766888667 is an apocalyptic number.

766888667 is a deficient number, since it is larger than the sum of its proper divisors (13221961).

766888667 is an equidigital number, since it uses as much as digits as its factorization.

766888667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220425 (or 220366 counting only the distinct ones).

The product of its digits is 32514048, while the sum is 62.

The square root of 766888667 is about 27692.7547744893. The cubic root of 766888667 is about 915.3294590315.

The spelling of 766888667 in words is "seven hundred sixty-six million, eight hundred eighty-eight thousand, six hundred sixty-seven".