778560063 has 4 divisors (see below), whose sum is σ = 1038080088. Its totient is φ = 519040040.

The previous prime is 778560061. The next prime is 778560073. The reversal of 778560063 is 360065877.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 778560063 - 2¹ = 778560061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 778559997 and 778560024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (778560061) 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 in 3 ways as a sum of consecutive naturals, for example, 129760008 + ... + 129760013.

It is an arithmetic number, because the mean of its divisors is an integer number (259520022).

Almost surely, 2^778560063 is an apocalyptic number.

778560063 is a deficient number, since it is larger than the sum of its proper divisors (259520025).

778560063 is a wasteful number, since it uses less digits than its factorization.

778560063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259520024.

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 778560063 is about 27902.6891714759. The cubic root of 778560063 is about 919.9496124735.

The spelling of 778560063 in words is "seven hundred seventy-eight million, five hundred sixty thousand, sixty-three".