66895873 has 8 divisors (see below), whose sum is σ = 73044000. Its totient is φ = 60758880.

The previous prime is 66895859. The next prime is 66895883. The reversal of 66895873 is 37859866.

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

It is a cyclic number.

It is not a de Polignac number, because 66895873 - 2⁵ = 66895841 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 66895873.

It is not an unprimeable number, because it can be changed into a prime (66895883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14461 + ... + 18517.

It is an arithmetic number, because the mean of its divisors is an integer number (9130500).

It is a Proth number, since it is equal to 4083 ⋅ 2¹⁴ + 1 and 4083 < 2¹⁴.

Almost surely, 2^66895873 is an apocalyptic number.

It is an amenable number.

66895873 is a deficient number, since it is larger than the sum of its proper divisors (6148127).

66895873 is a wasteful number, since it uses less digits than its factorization.

66895873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5567.

The product of its digits is 2177280, while the sum is 52.

The square root of 66895873 is about 8178.9897297894. The cubic root of 66895873 is about 405.9442945728.

The spelling of 66895873 in words is "sixty-six million, eight hundred ninety-five thousand, eight hundred seventy-three".