766487 has 2 divisors, whose sum is σ = 766488. Its totient is φ = 766486.

The previous prime is 766477. The next prime is 766501. The reversal of 766487 is 784667.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 766487 - 2⁴ = 766471 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 766487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (766457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383243 + 383244.

It is an arithmetic number, because the mean of its divisors is an integer number (383244).

2⁷⁶⁶⁴⁸⁷ is an apocalyptic number.

766487 is a deficient number, since it is larger than the sum of its proper divisors (1).

766487 is an equidigital number, since it uses as much as digits as its factorization.

766487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 38.

The square root of 766487 is about 875.4924328628. The cubic root of 766487 is about 91.5169626251.

The spelling of 766487 in words is "seven hundred sixty-six thousand, four hundred eighty-seven".