76780699 has 2 divisors, whose sum is σ = 76780700. Its totient is φ = 76780698.

The previous prime is 76780667. The next prime is 76780709. The reversal of 76780699 is 99608767.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 76780699 - 2⁵ = 76780667 is a prime.

It is not a weakly prime, because it can be changed into another prime (76780609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38390349 + 38390350.

It is an arithmetic number, because the mean of its divisors is an integer number (38390350).

Almost surely, 2^76780699 is an apocalyptic number.

76780699 is a deficient number, since it is larger than the sum of its proper divisors (1).

76780699 is an equidigital number, since it uses as much as digits as its factorization.

76780699 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1143072, while the sum is 52.

The square root of 76780699 is about 8762.4596432737. The cubic root of 76780699 is about 425.0278164031.

The spelling of 76780699 in words is "seventy-six million, seven hundred eighty thousand, six hundred ninety-nine".