66472244 has 24 divisors (see below), whose sum is σ = 123648840. Its totient is φ = 31159296.

The previous prime is 66472243. The next prime is 66472247. The reversal of 66472244 is 44227466.

It can be written as a sum of positive squares in 4 ways, for example, as 1024144 + 65448100 = 1012^2 + 8090^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66472243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17072 + ... + 20600.

It is an arithmetic number, because the mean of its divisors is an integer number (5152035).

Almost surely, 2^66472244 is an apocalyptic number.

It is an amenable number.

66472244 is a deficient number, since it is larger than the sum of its proper divisors (57176596).

66472244 is a wasteful number, since it uses less digits than its factorization.

66472244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3827 (or 3825 counting only the distinct ones).

The product of its digits is 64512, while the sum is 35.

The square root of 66472244 is about 8153.0512079834. The cubic root of 66472244 is about 405.0855765920.

The spelling of 66472244 in words is "sixty-six million, four hundred seventy-two thousand, two hundred forty-four".