6917321 has 4 divisors (see below), whose sum is σ = 6927492. Its totient is φ = 6907152.

The previous prime is 6917299. The next prime is 6917327. The reversal of 6917321 is 1237196.

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 5707321 + 1210000 = 2389^2 + 1100^2 .

It is a cyclic number.

It is not a de Polignac number, because 6917321 - 2¹⁴ = 6900937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6917327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3986 + ... + 5451.

It is an arithmetic number, because the mean of its divisors is an integer number (1731873).

Almost surely, 2^6917321 is an apocalyptic number.

It is an amenable number.

6917321 is a deficient number, since it is larger than the sum of its proper divisors (10171).

6917321 is an equidigital number, since it uses as much as digits as its factorization.

6917321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10170.

The product of its digits is 2268, while the sum is 29.

The square root of 6917321 is about 2630.0800368050. The cubic root of 6917321 is about 190.5369942598.

The spelling of 6917321 in words is "six million, nine hundred seventeen thousand, three hundred twenty-one".