6561701 has 4 divisors (see below), whose sum is σ = 6570732. Its totient is φ = 6552672.

The previous prime is 6561697. The next prime is 6561719. The reversal of 6561701 is 1071656.

6561701 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 2172676 + 4389025 = 1474^2 + 2095^2 .

It is a cyclic number.

It is not a de Polignac number, because 6561701 - 2² = 6561697 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6561721) 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, 3320 + ... + 4913.

It is an arithmetic number, because the mean of its divisors is an integer number (1642683).

Almost surely, 2^6561701 is an apocalyptic number.

It is an amenable number.

6561701 is a deficient number, since it is larger than the sum of its proper divisors (9031).

6561701 is an equidigital number, since it uses as much as digits as its factorization.

6561701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9030.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 6561701 is about 2561.5817379112. The cubic root of 6561701 is about 187.2142111384.

The spelling of 6561701 in words is "six million, five hundred sixty-one thousand, seven hundred one".