103688545 has 4 divisors (see below), whose sum is σ = 124426260. Its totient is φ = 82950832.

The previous prime is 103688513. The next prime is 103688551. The reversal of 103688545 is 545886301.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 78216336 + 25472209 = 8844^2 + 5047^2 .

It is a cyclic number.

It is not a de Polignac number, because 103688545 - 2⁵ = 103688513 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 103688498 and 103688507.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10368850 + ... + 10368859.

It is an arithmetic number, because the mean of its divisors is an integer number (31106565).

Almost surely, 2^103688545 is an apocalyptic number.

It is an amenable number.

103688545 is a deficient number, since it is larger than the sum of its proper divisors (20737715).

103688545 is an equidigital number, since it uses as much as digits as its factorization.

103688545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20737714.

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 103688545 is about 10182.7572395693. The cubic root of 103688545 is about 469.7970226598.

The spelling of 103688545 in words is "one hundred three million, six hundred eighty-eight thousand, five hundred forty-five".