108640485 has 24 divisors (see below), whose sum is σ = 190259160. Its totient is φ = 57341952.

The previous prime is 108640463. The next prime is 108640487. The reversal of 108640485 is 584046801.

108640485 is a `hidden beast` number, since 1 + 0 + 8 + 640 + 4 + 8 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 459684 + 108180801 = 678^2 + 10401^2 .

It is not a de Polignac number, because 108640485 - 2⁸ = 108640229 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108640487) 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, 8080 + ... + 16809.

It is an arithmetic number, because the mean of its divisors is an integer number (7927465).

Almost surely, 2^108640485 is an apocalyptic number.

108640485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

108640485 is a deficient number, since it is larger than the sum of its proper divisors (81618675).

108640485 is a wasteful number, since it uses less digits than its factorization.

108640485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24997 (or 24994 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 108640485 is about 10423.0746423500. The cubic root of 108640485 is about 477.1598557083.

The spelling of 108640485 in words is "one hundred eight million, six hundred forty thousand, four hundred eighty-five".