66110873 has 4 divisors (see below), whose sum is σ = 66263988. Its totient is φ = 65957760.

The previous prime is 66110867. The next prime is 66110881. The reversal of 66110873 is 37801166.

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 28815424 + 37295449 = 5368^2 + 6107^2 .

It is a cyclic number.

It is not a de Polignac number, because 66110873 - 2¹⁶ = 66045337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66110833) 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, 75908 + ... + 76773.

It is an arithmetic number, because the mean of its divisors is an integer number (16565997).

Almost surely, 2^66110873 is an apocalyptic number.

It is an amenable number.

66110873 is a deficient number, since it is larger than the sum of its proper divisors (153115).

66110873 is a wasteful number, since it uses less digits than its factorization.

66110873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153114.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 66110873 is about 8130.8593026814. The cubic root of 66110873 is about 404.3501706170.

The spelling of 66110873 in words is "sixty-six million, one hundred ten thousand, eight hundred seventy-three".