66675884 has 18 divisors (see below), whose sum is σ = 127393812. Its totient is φ = 30282600.

The previous prime is 66675821. The next prime is 66675893. The reversal of 66675884 is 48857666.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53549 + ... + 54779.

It is an arithmetic number, because the mean of its divisors is an integer number (7077434).

Almost surely, 2^66675884 is an apocalyptic number.

It is an amenable number.

66675884 is a deficient number, since it is larger than the sum of its proper divisors (60717928).

66675884 is a wasteful number, since it uses less digits than its factorization.

66675884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2477 (or 1244 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 50.

The square root of 66675884 is about 8165.5302338550. The cubic root of 66675884 is about 405.4988194048.

The spelling of 66675884 in words is "sixty-six million, six hundred seventy-five thousand, eight hundred eighty-four".