6604691 has 2 divisors, whose sum is σ = 6604692. Its totient is φ = 6604690.

The previous prime is 6604681. The next prime is 6604699. The reversal of 6604691 is 1964066.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6604691 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6604699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3302345 + 3302346.

It is an arithmetic number, because the mean of its divisors is an integer number (3302346).

Almost surely, 2^6604691 is an apocalyptic number.

6604691 is a deficient number, since it is larger than the sum of its proper divisors (1).

6604691 is an equidigital number, since it uses as much as digits as its factorization.

6604691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 6604691 is about 2569.9593381997. The cubic root of 6604691 is about 187.6221757799.

The spelling of 6604691 in words is "six million, six hundred four thousand, six hundred ninety-one".