766246057 has 2 divisors, whose sum is σ = 766246058. Its totient is φ = 766246056.

The previous prime is 766246037. The next prime is 766246087. The reversal of 766246057 is 750642667.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 765130921 + 1115136 = 27661^2 + 1056^2 .

It is a cyclic number.

It is not a de Polignac number, because 766246057 - 2²³ = 757857449 is a prime.

It is not a weakly prime, because it can be changed into another prime (766246037) 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, 383123028 + 383123029.

It is an arithmetic number, because the mean of its divisors is an integer number (383123029).

Almost surely, 2^766246057 is an apocalyptic number.

It is an amenable number.

766246057 is a deficient number, since it is larger than the sum of its proper divisors (1).

766246057 is an equidigital number, since it uses as much as digits as its factorization.

766246057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 423360, while the sum is 43.

The square root of 766246057 is about 27681.1498496721. The cubic root of 766246057 is about 915.0737225479.

The spelling of 766246057 in words is "seven hundred sixty-six million, two hundred forty-six thousand, fifty-seven".