6909057 has 10 divisors (see below), whose sum is σ = 10321058. Its totient is φ = 4605984.

The previous prime is 6909053. The next prime is 6909059. The reversal of 6909057 is 7509096.

It can be written as a sum of positive squares in only one way, i.e., 3538161 + 3370896 = 1881^2 + 1836^2 .

It is not a de Polignac number, because 6909057 - 2² = 6909053 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (6909053) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 42568 + ... + 42729.

Almost surely, 2^6909057 is an apocalyptic number.

It is an amenable number.

6909057 is a deficient number, since it is larger than the sum of its proper divisors (3412001).

6909057 is an equidigital number, since it uses as much as digits as its factorization.

6909057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85309 (or 85300 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 6909057 is about 2628.5085124458. The cubic root of 6909057 is about 190.4610869741.

The spelling of 6909057 in words is "six million, nine hundred nine thousand, fifty-seven".