6642136 has 8 divisors (see below), whose sum is σ = 12454020. Its totient is φ = 3321064.

The previous prime is 6642127. The next prime is 6642137. The reversal of 6642136 is 6312466.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6642137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415126 + ... + 415141.

Almost surely, 2^6642136 is an apocalyptic number.

It is an amenable number.

6642136 is a deficient number, since it is larger than the sum of its proper divisors (5811884).

6642136 is a wasteful number, since it uses less digits than its factorization.

6642136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830273 (or 830269 counting only the distinct ones).

The product of its digits is 5184, while the sum is 28.

The square root of 6642136 is about 2577.2341763992. The cubic root of 6642136 is about 187.9760796486.

The spelling of 6642136 in words is "six million, six hundred forty-two thousand, one hundred thirty-six".