766457 has 2 divisors, whose sum is σ = 766458. Its totient is φ = 766456.

The previous prime is 766453. The next prime is 766471. The reversal of 766457 is 754667.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 674041 + 92416 = 821^2 + 304^2 .

It is a cyclic number.

It is not a de Polignac number, because 766457 - 2² = 766453 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (766453) 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, 383228 + 383229.

It is an arithmetic number, because the mean of its divisors is an integer number (383229).

2⁷⁶⁶⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

766457 is a deficient number, since it is larger than the sum of its proper divisors (1).

766457 is an equidigital number, since it uses as much as digits as its factorization.

766457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35280, while the sum is 35.

The square root of 766457 is about 875.4752994802. The cubic root of 766457 is about 91.5157686302.

The spelling of 766457 in words is "seven hundred sixty-six thousand, four hundred fifty-seven".