766046081 has 2 divisors, whose sum is σ = 766046082. Its totient is φ = 766046080.

The previous prime is 766046077. The next prime is 766046087. The reversal of 766046081 is 180640667.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 763969600 + 2076481 = 27640^2 + 1441^2 .

It is an emirp because it is prime and its reverse (180640667) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 766046081 - 2² = 766046077 is a prime.

It is a super-2 number, since 2×766046081² = 1173653196430917122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (766046087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383023040 + 383023041.

It is an arithmetic number, because the mean of its divisors is an integer number (383023041).

Almost surely, 2^766046081 is an apocalyptic number.

It is an amenable number.

766046081 is a deficient number, since it is larger than the sum of its proper divisors (1).

766046081 is an equidigital number, since it uses as much as digits as its factorization.

766046081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 766046081 is about 27677.5374807803. The cubic root of 766046081 is about 914.9941098688.

The spelling of 766046081 in words is "seven hundred sixty-six million, forty-six thousand, eighty-one".