66372512 has 12 divisors (see below), whose sum is σ = 130670946. Its totient is φ = 33186240.

The previous prime is 66372511. The next prime is 66372517. The reversal of 66372512 is 21527366.

66372512 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., 41011216 + 25361296 = 6404^2 + 5036^2 .

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 2074141 = 66372512 / (6 + 6 + 3 + 7 + 2 + 5 + 1 + 2).

It is not an unprimeable number, because it can be changed into a prime (66372511) 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, 1037039 + ... + 1037102.

Almost surely, 2^66372512 is an apocalyptic number.

It is an amenable number.

66372512 is a deficient number, since it is larger than the sum of its proper divisors (64298434).

66372512 is a wasteful number, since it uses less digits than its factorization.

66372512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2074151 (or 2074143 counting only the distinct ones).

The product of its digits is 15120, while the sum is 32.

The square root of 66372512 is about 8146.9326743260. The cubic root of 66372512 is about 404.8828843908.

Adding to 66372512 its reverse (21527366), we get a palindrome (87899878).

The spelling of 66372512 in words is "sixty-six million, three hundred seventy-two thousand, five hundred twelve".