108643983 has 32 divisors (see below), whose sum is σ = 168709632. Its totient is φ = 60912000.

The previous prime is 108643979. The next prime is 108643999. The reversal of 108643983 is 389346801.

It is a happy number.

It is not a de Polignac number, because 108643983 - 2² = 108643979 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108645983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 383760 + ... + 384042.

It is an arithmetic number, because the mean of its divisors is an integer number (5272176).

Almost surely, 2^108643983 is an apocalyptic number.

108643983 is a deficient number, since it is larger than the sum of its proper divisors (60065649).

108643983 is a wasteful number, since it uses less digits than its factorization.

108643983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 108643983 is about 10423.2424417741. The cubic root of 108643983 is about 477.1649768417.

The spelling of 108643983 in words is "one hundred eight million, six hundred forty-three thousand, nine hundred eighty-three".