6725646 has 32 divisors (see below), whose sum is σ = 15206400. Its totient is φ = 2202840.

The previous prime is 6725633. The next prime is 6725657. The reversal of 6725646 is 6465276.

6725646 is a `hidden beast` number, since 6 + 7 + 2 + 5 + 646 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 6725646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2131 + ... + 4241.

It is an arithmetic number, because the mean of its divisors is an integer number (475200).

Almost surely, 2^6725646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6725646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7603200).

6725646 is an abundant number, since it is smaller than the sum of its proper divisors (8480754).

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

6725646 is a wasteful number, since it uses less digits than its factorization.

6725646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2181 (or 2175 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 6725646 is about 2593.3850466138. The cubic root of 6725646 is about 188.7605938238.

The spelling of 6725646 in words is "six million, seven hundred twenty-five thousand, six hundred forty-six".