66884792 has 48 divisors (see below), whose sum is σ = 138194280. Its totient is φ = 30326400.

The previous prime is 66884773. The next prime is 66884809. The reversal of 66884792 is 29748866.

It is a self number, because there is not a number n which added to its sum of digits gives 66884792.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82067 + ... + 82877.

Almost surely, 2^66884792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66884792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69097140).

66884792 is an abundant number, since it is smaller than the sum of its proper divisors (71309488).

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

66884792 is a wasteful number, since it uses less digits than its factorization.

66884792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904 (or 887 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 50.

The square root of 66884792 is about 8178.3122953333. The cubic root of 66884792 is about 405.9218790539.

It can be divided in two parts, 66884 and 792, that added together give a palindrome (67676).

The spelling of 66884792 in words is "sixty-six million, eight hundred eighty-four thousand, seven hundred ninety-two".