173013985 has 8 divisors (see below), whose sum is σ = 207757440. Its totient is φ = 138317424.

The previous prime is 173013979. The next prime is 173013989. The reversal of 173013985 is 589310371.

It is a happy number.

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 173013985 - 2³ = 173013977 is a prime.

It is a super-3 number, since 3×173013985³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (173013989) 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, 3015 + ... + 18844.

It is an arithmetic number, because the mean of its divisors is an integer number (25969680).

Almost surely, 2^173013985 is an apocalyptic number.

It is an amenable number.

173013985 is a deficient number, since it is larger than the sum of its proper divisors (34743455).

173013985 is a wasteful number, since it uses less digits than its factorization.

173013985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23447.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 173013985 is about 13153.4780571528. The cubic root of 173013985 is about 557.2204796361.

The spelling of 173013985 in words is "one hundred seventy-three million, thirteen thousand, nine hundred eighty-five".