676776767 has 4 divisors (see below), whose sum is σ = 677599920. Its totient is φ = 675953616.

The previous prime is 676776743. The next prime is 676776781. The reversal of 676776767 is 767677676.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-676776767 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 (676776707) 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 3 ways as a sum of consecutive naturals, for example, 410342 + ... + 411987.

It is an arithmetic number, because the mean of its divisors is an integer number (169399980).

Almost surely, 2^676776767 is an apocalyptic number.

676776767 is a deficient number, since it is larger than the sum of its proper divisors (823153).

676776767 is an equidigital number, since it uses as much as digits as its factorization.

676776767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823152.

The product of its digits is 21781872, while the sum is 59.

The square root of 676776767 is about 26014.9335382584. The cubic root of 676776767 is about 877.9743209368.

Subtracting 676776767 from its reverse (767677676), we obtain a palindrome (90900909).

The spelling of 676776767 in words is "six hundred seventy-six million, seven hundred seventy-six thousand, seven hundred sixty-seven".