66246912 has 54 divisors (see below), whose sum is σ = 191012822. Its totient is φ = 22081536.

The previous prime is 66246889. The next prime is 66246913. The reversal of 66246912 is 21964266.

It can be written as a sum of positive squares in only one way, i.e., 65028096 + 1218816 = 8064^2 + 1104^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (66246913) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12073 + ... + 16680.

Almost surely, 2^66246912 is an apocalyptic number.

It is an amenable number.

66246912 is an abundant number, since it is smaller than the sum of its proper divisors (124765910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66246912 is a wasteful number, since it uses less digits than its factorization.

66246912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28775 (or 28758 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 66246912 is about 8139.2206015072. The cubic root of 66246912 is about 404.6273297949.

It can be divided in two parts, 662 and 46912, that added together give a palindrome (47574).

The spelling of 66246912 in words is "sixty-six million, two hundred forty-six thousand, nine hundred twelve".