6691361 has 2 divisors, whose sum is σ = 6691362. Its totient is φ = 6691360.

The previous prime is 6691337. The next prime is 6691369. The reversal of 6691361 is 1631966.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5202961 + 1488400 = 2281^2 + 1220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6691361 is a prime.

It is not a weakly prime, because it can be changed into another prime (6691369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3345680 + 3345681.

It is an arithmetic number, because the mean of its divisors is an integer number (3345681).

Almost surely, 2^6691361 is an apocalyptic number.

It is an amenable number.

6691361 is a deficient number, since it is larger than the sum of its proper divisors (1).

6691361 is an equidigital number, since it uses as much as digits as its factorization.

6691361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 32.

The square root of 6691361 is about 2586.7665143959. The cubic root of 6691361 is about 188.4393020123.

The spelling of 6691361 in words is "six million, six hundred ninety-one thousand, three hundred sixty-one".