66211468 has 12 divisors (see below), whose sum is σ = 116284392. Its totient is φ = 32987360.

The previous prime is 66211451. The next prime is 66211471. The reversal of 66211468 is 86411266.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28330 + ... + 30577.

It is an arithmetic number, because the mean of its divisors is an integer number (9690366).

Almost surely, 2^66211468 is an apocalyptic number.

It is an amenable number.

66211468 is a deficient number, since it is larger than the sum of its proper divisors (50072924).

66211468 is a wasteful number, since it uses less digits than its factorization.

66211468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59192 (or 59190 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 66211468 is about 8137.0429518345. The cubic root of 66211468 is about 404.5551545084. Note that the first 3 decimals are identical.

The spelling of 66211468 in words is "sixty-six million, two hundred eleven thousand, four hundred sixty-eight".