6642012 has 24 divisors (see below), whose sum is σ = 16690576. Its totient is φ = 2043648.

The previous prime is 6642007. The next prime is 6642059. The reversal of 6642012 is 2102466.

It is a happy number.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 6642012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21133 + ... + 21444.

Almost surely, 2^6642012 is an apocalyptic number.

It is an amenable number.

6642012 is an abundant number, since it is smaller than the sum of its proper divisors (10048564).

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

6642012 is a wasteful number, since it uses less digits than its factorization.

6642012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42597 (or 42595 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 6642012 is about 2577.2101194897. The cubic root of 6642012 is about 187.9749098854.

Adding to 6642012 its reverse (2102466), we get a palindrome (8744478).

The spelling of 6642012 in words is "six million, six hundred forty-two thousand, twelve".