6468521 has 4 divisors (see below), whose sum is σ = 6494544. Its totient is φ = 6442500.

The previous prime is 6468509. The next prime is 6468541. The reversal of 6468521 is 1258646.

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 not a de Polignac number, because 6468521 - 2¹⁴ = 6452137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6468541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12635 + ... + 13136.

It is an arithmetic number, because the mean of its divisors is an integer number (1623636).

Almost surely, 2^6468521 is an apocalyptic number.

It is an amenable number.

6468521 is a deficient number, since it is larger than the sum of its proper divisors (26023).

6468521 is a wasteful number, since it uses less digits than its factorization.

6468521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26022.

The product of its digits is 11520, while the sum is 32.

The square root of 6468521 is about 2543.3287243296. The cubic root of 6468521 is about 186.3237991103.

The spelling of 6468521 in words is "six million, four hundred sixty-eight thousand, five hundred twenty-one".