108673421 has 8 divisors (see below), whose sum is σ = 110389944. Its totient is φ = 106963200.

The previous prime is 108673417. The next prime is 108673429. The reversal of 108673421 is 124376801.

It can be written as a sum of positive squares in 4 ways, for example, as 36168196 + 72505225 = 6014^2 + 8515^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 108673421 - 2² = 108673417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108673429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42635 + ... + 45111.

It is an arithmetic number, because the mean of its divisors is an integer number (13798743).

Almost surely, 2^108673421 is an apocalyptic number.

It is an amenable number.

108673421 is a deficient number, since it is larger than the sum of its proper divisors (1716523).

108673421 is an equidigital number, since it uses as much as digits as its factorization.

108673421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3151.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 108673421 is about 10424.6544786866. The cubic root of 108673421 is about 477.2080702363.

The spelling of 108673421 in words is "one hundred eight million, six hundred seventy-three thousand, four hundred twenty-one".