66875286 has 16 divisors (see below), whose sum is σ = 133855344. Its totient is φ = 22274304.

The previous prime is 66875251. The next prime is 66875287. The reversal of 66875286 is 68257866.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66875287) 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, 5730 + ... + 12906.

It is an arithmetic number, because the mean of its divisors is an integer number (8365959).

Almost surely, 2^66875286 is an apocalyptic number.

66875286 is an abundant number, since it is smaller than the sum of its proper divisors (66980058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66875286 is a wasteful number, since it uses less digits than its factorization.

66875286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8735.

The product of its digits is 967680, while the sum is 48.

The square root of 66875286 is about 8177.7311034296. The cubic root of 66875286 is about 405.9026475959.

It can be divided in two parts, 66875 and 286, that added together give a triangular number (67161 = T₃₆₆).

The spelling of 66875286 in words is "sixty-six million, eight hundred seventy-five thousand, two hundred eighty-six".