66274441 has 4 divisors (see below), whose sum is σ = 66295312. Its totient is φ = 66253572.

The previous prime is 66274399. The next prime is 66274447. The reversal of 66274441 is 14447266.

66274441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66274441 - 2⁹ = 66273929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66274397 and 66274406.

It is not an unprimeable number, because it can be changed into a prime (66274447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4575 + ... + 12388.

It is an arithmetic number, because the mean of its divisors is an integer number (16573828).

Almost surely, 2^66274441 is an apocalyptic number.

It is an amenable number.

66274441 is a deficient number, since it is larger than the sum of its proper divisors (20871).

66274441 is a wasteful number, since it uses less digits than its factorization.

66274441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20870.

The product of its digits is 32256, while the sum is 34.

The square root of 66274441 is about 8140.9115582962. The cubic root of 66274441 is about 404.6833698569.

The spelling of 66274441 in words is "sixty-six million, two hundred seventy-four thousand, four hundred forty-one".