66413448 has 48 divisors (see below), whose sum is σ = 180261900. Its totient is φ = 22089600.

The previous prime is 66413447. The next prime is 66413453. The reversal of 66413448 is 84431466.

66413448 is a `hidden beast` number, since 6 + 641 + 3 + 4 + 4 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 46539684 + 19873764 = 6822^2 + 4458^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (66413447) 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, 50398 + ... + 51698.

Almost surely, 2^66413448 is an apocalyptic number.

It is an amenable number.

66413448 is an abundant number, since it is smaller than the sum of its proper divisors (113848452).

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

66413448 is a wasteful number, since it uses less digits than its factorization.

66413448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2022 (or 2015 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 66413448 is about 8149.4446436552. Note that the first 3 decimals coincide. The cubic root of 66413448 is about 404.9661059884.

The spelling of 66413448 in words is "sixty-six million, four hundred thirteen thousand, four hundred forty-eight".