6468621 has 4 divisors (see below), whose sum is σ = 8624832. Its totient is φ = 4312412.

The previous prime is 6468617. The next prime is 6468629. The reversal of 6468621 is 1268646.

It is a happy number.

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 6468621 - 2² = 6468617 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6468629) 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, 1078101 + ... + 1078106.

It is an arithmetic number, because the mean of its divisors is an integer number (2156208).

Almost surely, 2^6468621 is an apocalyptic number.

It is an amenable number.

6468621 is a deficient number, since it is larger than the sum of its proper divisors (2156211).

6468621 is a wasteful number, since it uses less digits than its factorization.

6468621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2156210.

The product of its digits is 13824, while the sum is 33.

The square root of 6468621 is about 2543.3483835291. The cubic root of 6468621 is about 186.3247592620.

The spelling of 6468621 in words is "six million, four hundred sixty-eight thousand, six hundred twenty-one".