108640285 has 16 divisors (see below), whose sum is σ = 148656816. Its totient is φ = 75506688.

The previous prime is 108640261. The next prime is 108640297. The reversal of 108640285 is 582046801.

It can be written as a sum of positive squares in 8 ways, for example, as 708964 + 107931321 = 842^2 + 10389^2 .

It is a cyclic number.

It is not a de Polignac number, because 108640285 - 2¹¹ = 108638237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 108640285.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48054 + ... + 50263.

It is an arithmetic number, because the mean of its divisors is an integer number (9291051).

Almost surely, 2^108640285 is an apocalyptic number.

It is an amenable number.

108640285 is a deficient number, since it is larger than the sum of its proper divisors (40016531).

108640285 is a wasteful number, since it uses less digits than its factorization.

108640285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98352.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 108640285 is about 10423.0650482476. The cubic root of 108640285 is about 477.1595629015.

The spelling of 108640285 in words is "one hundred eight million, six hundred forty thousand, two hundred eighty-five".