66806112 has 48 divisors (see below), whose sum is σ = 176057280. Its totient is φ = 22180992.

The previous prime is 66806093. The next prime is 66806123. The reversal of 66806112 is 21160866.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 66806112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25939 + ... + 28397.

It is an arithmetic number, because the mean of its divisors is an integer number (3667860).

Almost surely, 2^66806112 is an apocalyptic number.

It is an amenable number.

66806112 is an abundant number, since it is smaller than the sum of its proper divisors (109251168).

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

66806112 is a wasteful number, since it uses less digits than its factorization.

66806112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2755 (or 2747 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 66806112 is about 8173.5005964397. The cubic root of 66806112 is about 405.7626477145.

Adding to 66806112 its reverse (21160866), we get a palindrome (87966978).

The spelling of 66806112 in words is "sixty-six million, eight hundred six thousand, one hundred twelve".