778668003 has 12 divisors (see below), whose sum is σ = 1138980960. Its totient is φ = 512540496.

The previous prime is 778668001. The next prime is 778668019. The reversal of 778668003 is 300866877.

It is not a de Polignac number, because 778668003 - 2¹ = 778668001 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 778668003.

It is not an unprimeable number, because it can be changed into a prime (778668001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 546876 + ... + 548297.

It is an arithmetic number, because the mean of its divisors is an integer number (94915080).

Almost surely, 2^778668003 is an apocalyptic number.

778668003 is a deficient number, since it is larger than the sum of its proper divisors (360312957).

778668003 is a wasteful number, since it uses less digits than its factorization.

778668003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095258 (or 1095255 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 778668003 is about 27904.6233266102. The cubic root of 778668003 is about 919.9921246175.

The spelling of 778668003 in words is "seven hundred seventy-eight million, six hundred sixty-eight thousand, three".