66476874 has 32 divisors (see below), whose sum is σ = 139501440. Its totient is φ = 21089600.

The previous prime is 66476873. The next prime is 66476897. The reversal of 66476874 is 47867466.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66476873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9664 + ... + 15044.

It is an arithmetic number, because the mean of its divisors is an integer number (4359420).

Almost surely, 2^66476874 is an apocalyptic number.

66476874 is an abundant number, since it is smaller than the sum of its proper divisors (73024566).

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

66476874 is a wasteful number, since it uses less digits than its factorization.

66476874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5486.

The product of its digits is 1354752, while the sum is 48.

The square root of 66476874 is about 8153.3351458161. The cubic root of 66476874 is about 405.0949815334.

The spelling of 66476874 in words is "sixty-six million, four hundred seventy-six thousand, eight hundred seventy-four".