108633921 has 24 divisors (see below), whose sum is σ = 160429920. Its totient is φ = 65334720.

The previous prime is 108633871. The next prime is 108633923. The reversal of 108633921 is 129336801.

It is not a de Polignac number, because 108633921 - 2⁶ = 108633857 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (108633923) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49381 + ... + 51533.

It is an arithmetic number, because the mean of its divisors is an integer number (6684580).

Almost surely, 2^108633921 is an apocalyptic number.

108633921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

108633921 is a deficient number, since it is larger than the sum of its proper divisors (51795999).

108633921 is a wasteful number, since it uses less digits than its factorization.

108633921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2317 (or 2306 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 108633921 is about 10422.7597592960. The cubic root of 108633921 is about 477.1502456003.

The spelling of 108633921 in words is "one hundred eight million, six hundred thirty-three thousand, nine hundred twenty-one".