6621488 has 20 divisors (see below), whose sum is σ = 12872688. Its totient is φ = 3299520.

The previous prime is 6621487. The next prime is 6621497. The reversal of 6621488 is 8841266.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (6621487) 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, 6245 + ... + 7227.

Almost surely, 2^6621488 is an apocalyptic number.

It is an amenable number.

6621488 is a deficient number, since it is larger than the sum of its proper divisors (6251200).

6621488 is a wasteful number, since it uses less digits than its factorization.

6621488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412 (or 1406 counting only the distinct ones).

The product of its digits is 18432, while the sum is 35.

The square root of 6621488 is about 2573.2252136181. The cubic root of 6621488 is about 187.7810942334.

The spelling of 6621488 in words is "six million, six hundred twenty-one thousand, four hundred eighty-eight".