766606651 has 2 divisors, whose sum is σ = 766606652. Its totient is φ = 766606650.

The previous prime is 766606591. The next prime is 766606669. The reversal of 766606651 is 156606667.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 766606651 - 2¹⁷ = 766475579 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 766606598 and 766606607.

It is not a weakly prime, because it can be changed into another prime (766609651) 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 as a sum of consecutive naturals, namely, 383303325 + 383303326.

It is an arithmetic number, because the mean of its divisors is an integer number (383303326).

Almost surely, 2^766606651 is an apocalyptic number.

766606651 is a deficient number, since it is larger than the sum of its proper divisors (1).

766606651 is an equidigital number, since it uses as much as digits as its factorization.

766606651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 766606651 is about 27687.6624329321. The cubic root of 766606651 is about 915.2172440461.

The spelling of 766606651 in words is "seven hundred sixty-six million, six hundred six thousand, six hundred fifty-one".