678354255 has 24 divisors (see below), whose sum is σ = 1186228368. Its totient is φ = 358584576.

The previous prime is 678354253. The next prime is 678354289. The reversal of 678354255 is 552453876.

It is not a de Polignac number, because 678354255 - 2¹ = 678354253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 678354255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678354251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61617 + ... + 71786.

It is an arithmetic number, because the mean of its divisors is an integer number (49426182).

Almost surely, 2^678354255 is an apocalyptic number.

678354255 is a deficient number, since it is larger than the sum of its proper divisors (507874113).

678354255 is a wasteful number, since it uses less digits than its factorization.

678354255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133527 (or 133524 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 45.

The square root of 678354255 is about 26045.2347848892. The cubic root of 678354255 is about 878.6559436558.

The spelling of 678354255 in words is "six hundred seventy-eight million, three hundred fifty-four thousand, two hundred fifty-five".