66883270 has 24 divisors (see below), whose sum is σ = 127893744. Its totient is φ = 25178496.

The previous prime is 66883261. The next prime is 66883277. The reversal of 66883270 is 7238866.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66883277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8682 + ... + 14461.

It is an arithmetic number, because the mean of its divisors is an integer number (5328906).

Almost surely, 2^66883270 is an apocalyptic number.

66883270 is a deficient number, since it is larger than the sum of its proper divisors (61010474).

66883270 is a wasteful number, since it uses less digits than its factorization.

66883270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23184 (or 23167 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 66883270 is about 8178.2192438207. The cubic root of 66883270 is about 405.9188000391.

It can be divided in two parts, 668 and 83270, that added together give a palindrome (83938).

The spelling of 66883270 in words is "sixty-six million, eight hundred eighty-three thousand, two hundred seventy".