6817641 has 4 divisors (see below), whose sum is σ = 9090192. Its totient is φ = 4545092.

The previous prime is 6817631. The next prime is 6817651. The reversal of 6817641 is 1467186.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (6817631) and next prime (6817651).

It is a cyclic number.

It is not a de Polignac number, because 6817641 - 2¹⁰ = 6816617 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (6817631) 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, 1136271 + ... + 1136276.

It is an arithmetic number, because the mean of its divisors is an integer number (2272548).

Almost surely, 2^6817641 is an apocalyptic number.

It is an amenable number.

6817641 is a deficient number, since it is larger than the sum of its proper divisors (2272551).

6817641 is a wasteful number, since it uses less digits than its factorization.

6817641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2272550.

The product of its digits is 8064, while the sum is 33.

The square root of 6817641 is about 2611.0612784843. The cubic root of 6817641 is about 189.6173369377.

The spelling of 6817641 in words is "six million, eight hundred seventeen thousand, six hundred forty-one".