66108246 has 16 divisors (see below), whose sum is σ = 132475584. Its totient is φ = 21992904.

The previous prime is 66108209. The next prime is 66108247. The reversal of 66108246 is 64280166.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66108247) 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, 7396 + ... + 13671.

It is an arithmetic number, because the mean of its divisors is an integer number (8279724).

Almost surely, 2^66108246 is an apocalyptic number.

66108246 is an abundant number, since it is smaller than the sum of its proper divisors (66367338).

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

66108246 is a wasteful number, since it uses less digits than its factorization.

66108246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21595.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 66108246 is about 8130.6977560355. The cubic root of 66108246 is about 404.3448147559.

The spelling of 66108246 in words is "sixty-six million, one hundred eight thousand, two hundred forty-six".