103908645 has 12 divisors (see below), whose sum is σ = 180108396. Its totient is φ = 55417920.

The previous prime is 103908619. The next prime is 103908647. The reversal of 103908645 is 546809301.

103908645 is a `hidden beast` number, since 1 + 0 + 3 + 9 + 0 + 8 + 645 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 47568609 + 56340036 = 6897^2 + 7506^2 .

It is not a de Polignac number, because 103908645 - 2¹⁹ = 103384357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103908647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1154496 + ... + 1154585.

It is an arithmetic number, because the mean of its divisors is an integer number (15009033).

Almost surely, 2^103908645 is an apocalyptic number.

103908645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

103908645 is a deficient number, since it is larger than the sum of its proper divisors (76199751).

103908645 is a wasteful number, since it uses less digits than its factorization.

103908645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2309092 (or 2309089 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 103908645 is about 10193.5589957581. The cubic root of 103908645 is about 470.1292009369.

The spelling of 103908645 in words is "one hundred three million, nine hundred eight thousand, six hundred forty-five".