66445002 has 32 divisors (see below), whose sum is σ = 159015360. Its totient is φ = 20444400.

The previous prime is 66444977. The next prime is 66445013. The reversal of 66445002 is 20054466.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46624 + ... + 48027.

It is an arithmetic number, because the mean of its divisors is an integer number (4969230).

Almost surely, 2^66445002 is an apocalyptic number.

66445002 is an abundant number, since it is smaller than the sum of its proper divisors (92570358).

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

66445002 is a wasteful number, since it uses less digits than its factorization.

66445002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94675 (or 94669 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 66445002 is about 8151.3803738999. The cubic root of 66445002 is about 405.0302309395.

Adding to 66445002 its reverse (20054466), we get a palindrome (86499468).

The spelling of 66445002 in words is "sixty-six million, four hundred forty-five thousand, two".