6690587 has 2 divisors, whose sum is σ = 6690588. Its totient is φ = 6690586.

The previous prime is 6690583. The next prime is 6690601. The reversal of 6690587 is 7850966.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6690587 - 2² = 6690583 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6690583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3345293 + 3345294.

It is an arithmetic number, because the mean of its divisors is an integer number (3345294).

Almost surely, 2^6690587 is an apocalyptic number.

6690587 is a deficient number, since it is larger than the sum of its proper divisors (1).

6690587 is an equidigital number, since it uses as much as digits as its factorization.

6690587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 6690587 is about 2586.6169024423. The cubic root of 6690587 is about 188.4320360444.

The spelling of 6690587 in words is "six million, six hundred ninety thousand, five hundred eighty-seven".