66246272 has 16 divisors (see below), whose sum is σ = 131975250. Its totient is φ = 33123072.

The previous prime is 66246253. The next prime is 66246277. The reversal of 66246272 is 27264266.

66246272 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 37258816 + 28987456 = 6104^2 + 5384^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (66246277) 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 as a sum of consecutive naturals, namely, 258647 + ... + 258902.

Almost surely, 2^66246272 is an apocalyptic number.

It is an amenable number.

66246272 is a deficient number, since it is larger than the sum of its proper divisors (65728978).

66246272 is an equidigital number, since it uses as much as digits as its factorization.

66246272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517563 (or 517551 counting only the distinct ones).

The product of its digits is 48384, while the sum is 35.

The square root of 66246272 is about 8139.1812856085. The cubic root of 66246272 is about 404.6260267790.

The spelling of 66246272 in words is "sixty-six million, two hundred forty-six thousand, two hundred seventy-two".