6725657 has 2 divisors, whose sum is σ = 6725658. Its totient is φ = 6725656.

The previous prime is 6725633. The next prime is 6725687. The reversal of 6725657 is 7565276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6046681 + 678976 = 2459^2 + 824^2 .

It is a cyclic number.

It is not a de Polignac number, because 6725657 - 2⁸ = 6725401 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6725657.

It is not a weakly prime, because it can be changed into another prime (6725687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3362828 + 3362829.

It is an arithmetic number, because the mean of its divisors is an integer number (3362829).

Almost surely, 2^6725657 is an apocalyptic number.

It is an amenable number.

6725657 is a deficient number, since it is larger than the sum of its proper divisors (1).

6725657 is an equidigital number, since it uses as much as digits as its factorization.

6725657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 88200, while the sum is 38.

The square root of 6725657 is about 2593.3871673933. The cubic root of 6725657 is about 188.7606967316.

The spelling of 6725657 in words is "six million, seven hundred twenty-five thousand, six hundred fifty-seven".