6645016 has 16 divisors (see below), whose sum is σ = 14239440. Its totient is φ = 2847840.

The previous prime is 6645013. The next prime is 6645019. The reversal of 6645016 is 6105466.

It is an interprime number because it is at equal distance from previous prime (6645013) and next prime (6645019).

It is a Harshad number since it is a multiple of its sum of digits (28).

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 3 ways as a sum of consecutive naturals, for example, 59275 + ... + 59386.

It is an arithmetic number, because the mean of its divisors is an integer number (889965).

Almost surely, 2^6645016 is an apocalyptic number.

It is an amenable number.

6645016 is an abundant number, since it is smaller than the sum of its proper divisors (7594424).

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

6645016 is a wasteful number, since it uses less digits than its factorization.

6645016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118674 (or 118670 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 6645016 is about 2577.7928543620. The cubic root of 6645016 is about 188.0032442476.

It can be divided in two parts, 66450 and 16, that added together give a palindrome (66466).

The spelling of 6645016 in words is "six million, six hundred forty-five thousand, sixteen".