108440643 has 16 divisors (see below), whose sum is σ = 149126400. Its totient is φ = 70059360.

The previous prime is 108440627. The next prime is 108440677. The reversal of 108440643 is 346044801.

It is not a de Polignac number, because 108440643 - 2⁴ = 108440627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 108440643.

It is not an unprimeable number, because it can be changed into a prime (108440243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8253 + ... + 16881.

It is an arithmetic number, because the mean of its divisors is an integer number (9320400).

Almost surely, 2^108440643 is an apocalyptic number.

108440643 is a deficient number, since it is larger than the sum of its proper divisors (40685757).

108440643 is an equidigital number, since it uses as much as digits as its factorization.

108440643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8762.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 108440643 is about 10413.4837110354. The cubic root of 108440643 is about 476.8671007912.

The spelling of 108440643 in words is "one hundred eight million, four hundred forty thousand, six hundred forty-three".