768403843 has 2 divisors, whose sum is σ = 768403844. Its totient is φ = 768403842.

The previous prime is 768403777. The next prime is 768403873. The reversal of 768403843 is 348304867.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-768403843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 768403843.

It is not a weakly prime, because it can be changed into another prime (768403873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384201921 + 384201922.

It is an arithmetic number, because the mean of its divisors is an integer number (384201922).

Almost surely, 2^768403843 is an apocalyptic number.

768403843 is a deficient number, since it is larger than the sum of its proper divisors (1).

768403843 is an equidigital number, since it uses as much as digits as its factorization.

768403843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 43.

The square root of 768403843 is about 27720.0981780368. The cubic root of 768403843 is about 915.9318814832.

The spelling of 768403843 in words is "seven hundred sixty-eight million, four hundred three thousand, eight hundred forty-three".