73580987 has 4 divisors (see below), whose sum is σ = 73739016. Its totient is φ = 73422960.

The previous prime is 73580963. The next prime is 73581023. The reversal of 73580987 is 78908537.

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

It is a cyclic number.

It is not a de Polignac number, because 73580987 - 2¹⁶ = 73515451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73580587) 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 3 ways as a sum of consecutive naturals, for example, 78314 + ... + 79247.

It is an arithmetic number, because the mean of its divisors is an integer number (18434754).

Almost surely, 2^73580987 is an apocalyptic number.

73580987 is a deficient number, since it is larger than the sum of its proper divisors (158029).

73580987 is a wasteful number, since it uses less digits than its factorization.

73580987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158028.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 73580987 is about 8577.9360571177. The cubic root of 73580987 is about 419.0397317089.

The spelling of 73580987 in words is "seventy-three million, five hundred eighty thousand, nine hundred eighty-seven".