6725669 has 4 divisors (see below), whose sum is σ = 6740844. Its totient is φ = 6710496.

The previous prime is 6725657. The next prime is 6725687. The reversal of 6725669 is 9665276.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3960100 + 2765569 = 1990^2 + 1663^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6725669 is a prime.

It is a super-2 number, since 2×6725669² = 90469246995122, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6725969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6902 + ... + 7815.

It is an arithmetic number, because the mean of its divisors is an integer number (1685211).

Almost surely, 2^6725669 is an apocalyptic number.

It is an amenable number.

6725669 is a deficient number, since it is larger than the sum of its proper divisors (15175).

6725669 is a wasteful number, since it uses less digits than its factorization.

6725669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15174.

The product of its digits is 136080, while the sum is 41.

The square root of 6725669 is about 2593.3894809689. The cubic root of 6725669 is about 188.7608089946.

The spelling of 6725669 in words is "six million, seven hundred twenty-five thousand, six hundred sixty-nine".