678423795 has 16 divisors (see below), whose sum is σ = 1240546560. Its totient is φ = 310136544.

The previous prime is 678423793. The next prime is 678423827. The reversal of 678423795 is 597324876.

It is not a de Polignac number, because 678423795 - 2¹ = 678423793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (678423791) 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 15 ways as a sum of consecutive naturals, for example, 3230485 + ... + 3230694.

It is an arithmetic number, because the mean of its divisors is an integer number (77534160).

Almost surely, 2^678423795 is an apocalyptic number.

678423795 is a deficient number, since it is larger than the sum of its proper divisors (562122765).

678423795 is a wasteful number, since it uses less digits than its factorization.

678423795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6461194.

The product of its digits is 2540160, while the sum is 51.

The square root of 678423795 is about 26046.5697357637. The cubic root of 678423795 is about 878.6859671261.

The spelling of 678423795 in words is "six hundred seventy-eight million, four hundred twenty-three thousand, seven hundred ninety-five".