768404887 has 2 divisors, whose sum is σ = 768404888. Its totient is φ = 768404886.

The previous prime is 768404867. The next prime is 768404899. The reversal of 768404887 is 788404867.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-768404887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (768404807) 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, 384202443 + 384202444.

It is an arithmetic number, because the mean of its divisors is an integer number (384202444).

Almost surely, 2^768404887 is an apocalyptic number.

768404887 is a deficient number, since it is larger than the sum of its proper divisors (1).

768404887 is an equidigital number, since it uses as much as digits as its factorization.

768404887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2408448, while the sum is 52.

The square root of 768404887 is about 27720.1170091326. The cubic root of 768404887 is about 915.9322962965.

The spelling of 768404887 in words is "seven hundred sixty-eight million, four hundred four thousand, eight hundred eighty-seven".