103689855 has 16 divisors (see below), whose sum is σ = 184337760. Its totient is φ = 55301184.

The previous prime is 103689853. The next prime is 103689863. The reversal of 103689855 is 558986301.

It is not a de Polignac number, because 103689855 - 2¹ = 103689853 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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 103689855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103689853) 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 15 ways as a sum of consecutive naturals, for example, 383902 + ... + 384171.

It is an arithmetic number, because the mean of its divisors is an integer number (11521110).

Almost surely, 2^103689855 is an apocalyptic number.

103689855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

103689855 is a deficient number, since it is larger than the sum of its proper divisors (80647905).

103689855 is an equidigital number, since it uses as much as digits as its factorization.

103689855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768087 (or 768081 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 103689855 is about 10182.8215637907. The cubic root of 103689855 is about 469.7990011217.

The spelling of 103689855 in words is "one hundred three million, six hundred eighty-nine thousand, eight hundred fifty-five".