66479841 has 24 divisors (see below), whose sum is σ = 104349440. Its totient is φ = 40629600.

The previous prime is 66479839. The next prime is 66479857. The reversal of 66479841 is 14897466.

It is not a de Polignac number, because 66479841 - 2¹ = 66479839 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66479891) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 970 + ... + 11571.

Almost surely, 2^66479841 is an apocalyptic number.

It is an amenable number.

66479841 is a deficient number, since it is larger than the sum of its proper divisors (37869599).

66479841 is a wasteful number, since it uses less digits than its factorization.

66479841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12597 (or 12594 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 66479841 is about 8153.5170938681. The cubic root of 66479841 is about 405.1010081852.

The spelling of 66479841 in words is "sixty-six million, four hundred seventy-nine thousand, eight hundred forty-one".