123678855 has 24 divisors (see below), whose sum is σ = 218941632. Its totient is φ = 64557504.

The previous prime is 123678833. The next prime is 123678857. The reversal of 123678855 is 558876321.

It is not a de Polignac number, because 123678855 - 2⁹ = 123678343 is a prime.

It is a super-2 number, since 2×123678855² = 30592918348222050, which contains 22 as substring.

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 123678855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123678857) 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, 27124 + ... + 31353.

It is an arithmetic number, because the mean of its divisors is an integer number (9122568).

Almost surely, 2^123678855 is an apocalyptic number.

123678855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123678855 is a deficient number, since it is larger than the sum of its proper divisors (95262777).

123678855 is a wasteful number, since it uses less digits than its factorization.

123678855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58535 (or 58532 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 123678855 is about 11121.0995409627. The cubic root of 123678855 is about 498.2322306823.

The spelling of 123678855 in words is "one hundred twenty-three million, six hundred seventy-eight thousand, eight hundred fifty-five".