678271427 has 4 divisors (see below), whose sum is σ = 678894216. Its totient is φ = 677648640.

The previous prime is 678271421. The next prime is 678271441. The reversal of 678271427 is 724172876.

678271427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 678271427 - 2⁴ = 678271411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (678271421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 309758 + ... + 311939.

It is an arithmetic number, because the mean of its divisors is an integer number (169723554).

Almost surely, 2^678271427 is an apocalyptic number.

678271427 is a deficient number, since it is larger than the sum of its proper divisors (622789).

678271427 is a wasteful number, since it uses less digits than its factorization.

678271427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622788.

The product of its digits is 263424, while the sum is 44.

The square root of 678271427 is about 26043.6446566144. The cubic root of 678271427 is about 878.6201804951.

The spelling of 678271427 in words is "six hundred seventy-eight million, two hundred seventy-one thousand, four hundred twenty-seven".