6628615 has 8 divisors (see below), whose sum is σ = 9090720. Its totient is φ = 4545312.

The previous prime is 6628613. The next prime is 6628621. The reversal of 6628615 is 5168266.

6628615 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6628615 - 2¹ = 6628613 is a prime.

6628615 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6628613) 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, 94660 + ... + 94729.

It is an arithmetic number, because the mean of its divisors is an integer number (1136340).

Almost surely, 2^6628615 is an apocalyptic number.

6628615 is a deficient number, since it is larger than the sum of its proper divisors (2462105).

6628615 is a wasteful number, since it uses less digits than its factorization.

6628615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189401.

The product of its digits is 17280, while the sum is 34.

The square root of 6628615 is about 2574.6096791553. The cubic root of 6628615 is about 187.8484424379.

The spelling of 6628615 in words is "six million, six hundred twenty-eight thousand, six hundred fifteen".