66674888 has 48 divisors (see below), whose sum is σ = 149389020. Its totient is φ = 27796608.

The previous prime is 66674843. The next prime is 66674911. The reversal of 66674888 is 88847666.

It is a happy number.

66674888 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 66618244 + 56644 = 8162^2 + 238^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12206 + ... + 16802.

Almost surely, 2^66674888 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 66674888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74694510).

66674888 is an abundant number, since it is smaller than the sum of its proper divisors (82714132).

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

66674888 is a wasteful number, since it uses less digits than its factorization.

66674888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4654 (or 4643 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 53.

The square root of 66674888 is about 8165.4692455486. The cubic root of 66674888 is about 405.4968002898.

The spelling of 66674888 in words is "sixty-six million, six hundred seventy-four thousand, eight hundred eighty-eight".