73481709 has 8 divisors (see below), whose sum is σ = 111972160. Its totient is φ = 41989536.

The previous prime is 73481627. The next prime is 73481747. The reversal of 73481709 is 90718437.

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

It is a de Polignac number, because none of the positive numbers 2^k-73481709 is a prime.

It is a super-3 number, since 3×73481709³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73481209) 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, 1749544 + ... + 1749585.

It is an arithmetic number, because the mean of its divisors is an integer number (13996520).

Almost surely, 2^73481709 is an apocalyptic number.

It is an amenable number.

73481709 is a deficient number, since it is larger than the sum of its proper divisors (38490451).

73481709 is a wasteful number, since it uses less digits than its factorization.

73481709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3499139.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 73481709 is about 8572.1472805826. The cubic root of 73481709 is about 418.8511859434.

The spelling of 73481709 in words is "seventy-three million, four hundred eighty-one thousand, seven hundred nine".