766651 has 2 divisors, whose sum is σ = 766652. Its totient is φ = 766650.

The previous prime is 766639. The next prime is 766679. The reversal of 766651 is 156667.

766651 is nontrivially palindromic in base 16.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 766651 - 2¹⁵ = 733883 is a prime.

It is a Chen prime.

It is a nialpdrome in base 10.

It is not a weakly prime, because it can be changed into another prime (776651) 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, 383325 + 383326.

It is an arithmetic number, because the mean of its divisors is an integer number (383326).

2⁷⁶⁶⁶⁵¹ is an apocalyptic number.

766651 is a deficient number, since it is larger than the sum of its proper divisors (1).

766651 is an equidigital number, since it uses as much as digits as its factorization.

766651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 31.

The square root of 766651 is about 875.5860894281. The cubic root of 766651 is about 91.5234892465.

The spelling of 766651 in words is "seven hundred sixty-six thousand, six hundred fifty-one".