6512641 has 8 divisors (see below), whose sum is σ = 6633000. Its totient is φ = 6393600.

The previous prime is 6512633. The next prime is 6512647. The reversal of 6512641 is 1462156.

It can be written as a sum of positive squares in 4 ways, for example, as 2190400 + 4322241 = 1480^2 + 2079^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6512641 - 2³ = 6512633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6512647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16041 + ... + 16441.

It is an arithmetic number, because the mean of its divisors is an integer number (829125).

It is a Proth number, since it is equal to 795 ⋅ 2¹³ + 1 and 795 < 2¹³.

Almost surely, 2^6512641 is an apocalyptic number.

It is an amenable number.

6512641 is a deficient number, since it is larger than the sum of its proper divisors (120359).

6512641 is a wasteful number, since it uses less digits than its factorization.

6512641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659.

The product of its digits is 1440, while the sum is 25.

The square root of 6512641 is about 2551.9876567100. The cubic root of 6512641 is about 186.7464607128.

Adding to 6512641 its reverse (1462156), we get a palindrome (7974797).

The spelling of 6512641 in words is "six million, five hundred twelve thousand, six hundred forty-one".