6621164 has 24 divisors (see below), whose sum is σ = 13078800. Its totient is φ = 2905280.

The previous prime is 6621163. The next prime is 6621191. The reversal of 6621164 is 4611266.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (6621163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1319 + ... + 3870.

It is an arithmetic number, because the mean of its divisors is an integer number (544950).

Almost surely, 2^6621164 is an apocalyptic number.

It is an amenable number.

6621164 is a deficient number, since it is larger than the sum of its proper divisors (6457636).

6621164 is a wasteful number, since it uses less digits than its factorization.

6621164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5233 (or 5231 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

The square root of 6621164 is about 2573.1622568350. The cubic root of 6621164 is about 187.7780313737.

The spelling of 6621164 in words is "six million, six hundred twenty-one thousand, one hundred sixty-four".