6645012 has 24 divisors (see below), whose sum is σ = 16914912. Its totient is φ = 2013600.

The previous prime is 6644983. The next prime is 6645013. The reversal of 6645012 is 2105466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6645013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25039 + ... + 25302.

It is an arithmetic number, because the mean of its divisors is an integer number (704788).

Almost surely, 2^6645012 is an apocalyptic number.

It is an amenable number.

6645012 is an abundant number, since it is smaller than the sum of its proper divisors (10269900).

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

6645012 is a wasteful number, since it uses less digits than its factorization.

6645012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50359 (or 50357 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 6645012 is about 2577.7920785044. The cubic root of 6645012 is about 188.0032065245.

It can be divided in two parts, 66 and 45012, that multiplied together give a palindrome (2970792).

The spelling of 6645012 in words is "six million, six hundred forty-five thousand, twelve".