6510641 has 2 divisors, whose sum is σ = 6510642. Its totient is φ = 6510640.

The previous prime is 6510613. The next prime is 6510649. The reversal of 6510641 is 1460156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5387041 + 1123600 = 2321^2 + 1060^2 .

It is a cyclic number.

It is not a de Polignac number, because 6510641 - 2⁶ = 6510577 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6510649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3255320 + 3255321.

It is an arithmetic number, because the mean of its divisors is an integer number (3255321).

Almost surely, 2^6510641 is an apocalyptic number.

It is an amenable number.

6510641 is a deficient number, since it is larger than the sum of its proper divisors (1).

6510641 is an equidigital number, since it uses as much as digits as its factorization.

6510641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 6510641 is about 2551.5957751964. The cubic root of 6510641 is about 186.7273424493.

Adding to 6510641 its reverse (1460156), we get a palindrome (7970797).

The spelling of 6510641 in words is "six million, five hundred ten thousand, six hundred forty-one".