867255678 has 12 divisors (see below), whose sum is σ = 1879054008. Its totient is φ = 289085220.

The previous prime is 867255673. The next prime is 867255679. The reversal of 867255678 is 876552768.

867255678 is a `hidden beast` number, since 8 + 6 + 72 + 5 + 567 + 8 = 666.

It is a super-2 number, since 2×867255678² = 1504264822046479368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867255671) 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 5 ways as a sum of consecutive naturals, for example, 24090418 + ... + 24090453.

It is an arithmetic number, because the mean of its divisors is an integer number (156587834).

Almost surely, 2^867255678 is an apocalyptic number.

867255678 is an abundant number, since it is smaller than the sum of its proper divisors (1011798330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

867255678 is a wasteful number, since it uses less digits than its factorization.

867255678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48180879 (or 48180876 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 54.

The square root of 867255678 is about 29449.2050486936. The cubic root of 867255678 is about 953.6354434249.

The spelling of 867255678 in words is "eight hundred sixty-seven million, two hundred fifty-five thousand, six hundred seventy-eight".