6791657 has 4 divisors (see below), whose sum is σ = 6797700. Its totient is φ = 6785616.

The previous prime is 6791623. The next prime is 6791677. The reversal of 6791657 is 7561976.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5494336 + 1297321 = 2344^2 + 1139^2 .

It is a cyclic number.

It is not a de Polignac number, because 6791657 - 2⁶ = 6791593 is a prime.

It is a super-2 number, since 2×6791657² = 92253209611298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6791677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 782 + ... + 3767.

It is an arithmetic number, because the mean of its divisors is an integer number (1699425).

Almost surely, 2^6791657 is an apocalyptic number.

It is an amenable number.

6791657 is a deficient number, since it is larger than the sum of its proper divisors (6043).

6791657 is a wasteful number, since it uses less digits than its factorization.

6791657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6042.

The product of its digits is 79380, while the sum is 41.

The square root of 6791657 is about 2606.0807738825. The cubic root of 6791657 is about 189.3761347585.

The spelling of 6791657 in words is "six million, seven hundred ninety-one thousand, six hundred fifty-seven".