108645321 has 4 divisors (see below), whose sum is σ = 144860432. Its totient is φ = 72430212.

The previous prime is 108645301. The next prime is 108645323. The reversal of 108645321 is 123546801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 108645321 - 2⁵ = 108645289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108645323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18107551 + ... + 18107556.

It is an arithmetic number, because the mean of its divisors is an integer number (36215108).

Almost surely, 2^108645321 is an apocalyptic number.

It is an amenable number.

108645321 is a deficient number, since it is larger than the sum of its proper divisors (36215111).

108645321 is an equidigital number, since it uses as much as digits as its factorization.

108645321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36215110.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 108645321 is about 10423.3066250591. The cubic root of 108645321 is about 477.1669356682.

The spelling of 108645321 in words is "one hundred eight million, six hundred forty-five thousand, three hundred twenty-one".