108724643 has 4 divisors (see below), whose sum is σ = 110256048. Its totient is φ = 107193240.

The previous prime is 108724591. The next prime is 108724663. The reversal of 108724643 is 346427801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346427801 = 107 ⋅3237643.

It is a cyclic number.

It is not a de Polignac number, because 108724643 - 2²⁰ = 107676067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108724663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 765596 + ... + 765737.

It is an arithmetic number, because the mean of its divisors is an integer number (27564012).

Almost surely, 2^108724643 is an apocalyptic number.

108724643 is a deficient number, since it is larger than the sum of its proper divisors (1531405).

108724643 is an equidigital number, since it uses as much as digits as its factorization.

108724643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1531404.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 108724643 is about 10427.1109613354. The cubic root of 108724643 is about 477.2830340197.

The spelling of 108724643 in words is "one hundred eight million, seven hundred twenty-four thousand, six hundred forty-three".