6646542 has 32 divisors (see below), whose sum is σ = 15993600. Its totient is φ = 1798848.

The previous prime is 6646513. The next prime is 6646543. The reversal of 6646542 is 2456466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6646543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3367 + ... + 4962.

It is an arithmetic number, because the mean of its divisors is an integer number (499800).

Almost surely, 2^6646542 is an apocalyptic number.

6646542 is an abundant number, since it is smaller than the sum of its proper divisors (9347058).

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

6646542 is a wasteful number, since it uses less digits than its factorization.

6646542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8360.

The product of its digits is 34560, while the sum is 33.

The square root of 6646542 is about 2578.0888270190. The cubic root of 6646542 is about 188.0176345311.

The spelling of 6646542 in words is "six million, six hundred forty-six thousand, five hundred forty-two".