766670089 has 2 divisors, whose sum is σ = 766670090. Its totient is φ = 766670088.

The previous prime is 766670077. The next prime is 766670137. The reversal of 766670089 is 980076667.

766670089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 736199689 + 30470400 = 27133^2 + 5520^2 .

It is a cyclic number.

It is not a de Polignac number, because 766670089 - 2⁵ = 766670057 is a prime.

It is not a weakly prime, because it can be changed into another prime (766670189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383335044 + 383335045.

It is an arithmetic number, because the mean of its divisors is an integer number (383335045).

Almost surely, 2^766670089 is an apocalyptic number.

It is an amenable number.

766670089 is a deficient number, since it is larger than the sum of its proper divisors (1).

766670089 is an equidigital number, since it uses as much as digits as its factorization.

766670089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 762048, while the sum is 49.

The square root of 766670089 is about 27688.8080097356. The cubic root of 766670089 is about 915.2424886093.

The spelling of 766670089 in words is "seven hundred sixty-six million, six hundred seventy thousand, eighty-nine".