73066187 has 4 divisors (see below), whose sum is σ = 77364216. Its totient is φ = 68768160.

The previous prime is 73066183. The next prime is 73066271. The reversal of 73066187 is 78166037.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78166037 = 8297 ⋅9421.

It is a cyclic number.

It is not a de Polignac number, because 73066187 - 2² = 73066183 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73066187.

It is not an unprimeable number, because it can be changed into a prime (73066183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2148989 + ... + 2149022.

It is an arithmetic number, because the mean of its divisors is an integer number (19341054).

Almost surely, 2^73066187 is an apocalyptic number.

73066187 is a deficient number, since it is larger than the sum of its proper divisors (4298029).

73066187 is a wasteful number, since it uses less digits than its factorization.

73066187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4298028.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 73066187 is about 8547.8761689674. The cubic root of 73066187 is about 418.0601910377.

The spelling of 73066187 in words is "seventy-three million, sixty-six thousand, one hundred eighty-seven".