76766489 has 2 divisors, whose sum is σ = 76766490. Its totient is φ = 76766488.

The previous prime is 76766483. The next prime is 76766497. The reversal of 76766489 is 98466767.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59059225 + 17707264 = 7685^2 + 4208^2 .

It is a cyclic number.

It is not a de Polignac number, because 76766489 - 2⁸ = 76766233 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76766489.

It is not a weakly prime, because it can be changed into another prime (76766483) 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, 38383244 + 38383245.

It is an arithmetic number, because the mean of its divisors is an integer number (38383245).

Almost surely, 2^76766489 is an apocalyptic number.

It is an amenable number.

76766489 is a deficient number, since it is larger than the sum of its proper divisors (1).

76766489 is an equidigital number, since it uses as much as digits as its factorization.

76766489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3048192, while the sum is 53.

The square root of 76766489 is about 8761.6487603647. The cubic root of 76766489 is about 425.0015944577.

The spelling of 76766489 in words is "seventy-six million, seven hundred sixty-six thousand, four hundred eighty-nine".