6601513 has 2 divisors, whose sum is σ = 6601514. Its totient is φ = 6601512.

The previous prime is 6601501. The next prime is 6601519. The reversal of 6601513 is 3151066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6594624 + 6889 = 2568^2 + 83^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6601513 is a prime.

It is not a weakly prime, because it can be changed into another prime (6601519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3300756 + 3300757.

It is an arithmetic number, because the mean of its divisors is an integer number (3300757).

Almost surely, 2^6601513 is an apocalyptic number.

It is an amenable number.

6601513 is a deficient number, since it is larger than the sum of its proper divisors (1).

6601513 is an equidigital number, since it uses as much as digits as its factorization.

6601513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 6601513 is about 2569.3409660845. The cubic root of 6601513 is about 187.5920780339.

Adding to 6601513 its reverse (3151066), we get a palindrome (9752579).

The spelling of 6601513 in words is "six million, six hundred one thousand, five hundred thirteen".