73985 has 4 divisors (see below), whose sum is σ = 88788. Its totient is φ = 59184.

The previous prime is 73973. The next prime is 73999. The reversal of 73985 is 58937.

It is a Cunningham number, because it is equal to 272²+1.

73985 is an esthetic number in base 16, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26896 + 47089 = 164^2 + 217^2 .

It is a cyclic number.

It is not a de Polignac number, because 73985 - 2¹⁴ = 57601 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7394 + ... + 7403.

It is an arithmetic number, because the mean of its divisors is an integer number (22197).

2⁷³⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

73985 is a deficient number, since it is larger than the sum of its proper divisors (14803).

73985 is a wasteful number, since it uses less digits than its factorization.

73985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14802.

The product of its digits is 7560, while the sum is 32.

The square root of 73985 is about 272.0018382291. The cubic root of 73985 is about 41.9805276326.

The spelling of 73985 in words is "seventy-three thousand, nine hundred eighty-five".