766247887 has 2 divisors, whose sum is σ = 766247888. Its totient is φ = 766247886.

The previous prime is 766247861. The next prime is 766247891. The reversal of 766247887 is 788742667.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 766247887 - 2⁷ = 766247759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (766247857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383123943 + 383123944.

It is an arithmetic number, because the mean of its divisors is an integer number (383123944).

Almost surely, 2^766247887 is an apocalyptic number.

766247887 is a deficient number, since it is larger than the sum of its proper divisors (1).

766247887 is an equidigital number, since it uses as much as digits as its factorization.

766247887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6322176, while the sum is 55.

The square root of 766247887 is about 27681.1829046376. The cubic root of 766247887 is about 915.0744510274.

The spelling of 766247887 in words is "seven hundred sixty-six million, two hundred forty-seven thousand, eight hundred eighty-seven".