6460021 has 4 divisors (see below), whose sum is σ = 6468192. Its totient is φ = 6451852.

The previous prime is 6459991. The next prime is 6460031. The reversal of 6460021 is 1200646.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6460021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6460031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2755 + ... + 4528.

It is an arithmetic number, because the mean of its divisors is an integer number (1617048).

Almost surely, 2^6460021 is an apocalyptic number.

It is an amenable number.

6460021 is a deficient number, since it is larger than the sum of its proper divisors (8171).

6460021 is an equidigital number, since it uses as much as digits as its factorization.

6460021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8170.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 6460021 is about 2541.6571365942. The cubic root of 6460021 is about 186.2421500227.

Adding to 6460021 its reverse (1200646), we get a palindrome (7660667).

The spelling of 6460021 in words is "six million, four hundred sixty thousand, twenty-one".