6725988 has 36 divisors (see below), whose sum is σ = 17214288. Its totient is φ = 2214000.

The previous prime is 6725987. The next prime is 6726023. The reversal of 6725988 is 8895276.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×6725988² = 90477829152288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6725987) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1863 + ... + 4113.

Almost surely, 2^6725988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6725988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8607144).

6725988 is an abundant number, since it is smaller than the sum of its proper divisors (10488300).

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

6725988 is a wasteful number, since it uses less digits than its factorization.

6725988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2344 (or 2339 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 6725988 is about 2593.4509827641. The cubic root of 6725988 is about 188.7637932700.

The spelling of 6725988 in words is "six million, seven hundred twenty-five thousand, nine hundred eighty-eight".