108065661 has 32 divisors (see below), whose sum is σ = 165169152. Its totient is φ = 62208960.

The previous prime is 108065653. The next prime is 108065681. The reversal of 108065661 is 166560801.

It is not a de Polignac number, because 108065661 - 2³ = 108065653 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108065681) 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 31 ways as a sum of consecutive naturals, for example, 130896 + ... + 131718.

It is an arithmetic number, because the mean of its divisors is an integer number (5161536).

Almost surely, 2^108065661 is an apocalyptic number.

108065661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

108065661 is a deficient number, since it is larger than the sum of its proper divisors (57103491).

108065661 is a wasteful number, since it uses less digits than its factorization.

108065661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 108065661 is about 10395.4634817309. The cubic root of 108065661 is about 476.3168056132.

The spelling of 108065661 in words is "one hundred eight million, sixty-five thousand, six hundred sixty-one".