66472002 has 40 divisors (see below), whose sum is σ = 154093500. Its totient is φ = 21391776.

The previous prime is 66471971. The next prime is 66472009. The reversal of 66472002 is 20027466.

It can be written as a sum of positive squares in 2 ways, for example, as 61449921 + 5022081 = 7839^2 + 2241^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (66472009) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2377 + ... + 11772.

Almost surely, 2^66472002 is an apocalyptic number.

66472002 is an abundant number, since it is smaller than the sum of its proper divisors (87621498).

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

66472002 is a wasteful number, since it uses less digits than its factorization.

66472002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14192 (or 14183 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 66472002 is about 8153.0363669004. The cubic root of 66472002 is about 405.0850850042.

Adding to 66472002 its reverse (20027466), we get a palindrome (86499468).

It can be divided in two parts, 6647 and 2002, that added together give a square (8649 = 93²).

The spelling of 66472002 in words is "sixty-six million, four hundred seventy-two thousand, two".