174239985 has 8 divisors (see below), whose sum is σ = 278784000. Its totient is φ = 92927984.

The previous prime is 174239981. The next prime is 174240007. The reversal of 174239985 is 589932471.

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 174239985 - 2² = 174239981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (174239981) 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 7 ways as a sum of consecutive naturals, for example, 5807985 + ... + 5808014.

It is an arithmetic number, because the mean of its divisors is an integer number (34848000).

Almost surely, 2^174239985 is an apocalyptic number.

174239985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

174239985 is a deficient number, since it is larger than the sum of its proper divisors (104544015).

174239985 is a wasteful number, since it uses less digits than its factorization.

174239985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11616007.

The product of its digits is 544320, while the sum is 48.

The square root of 174239985 is about 13199.9994318182. Note that the first 3 decimals coincide. The cubic root of 174239985 is about 558.5335623035.

The spelling of 174239985 in words is "one hundred seventy-four million, two hundred thirty-nine thousand, nine hundred eighty-five".