6628390 has 8 divisors (see below), whose sum is σ = 11931120. Its totient is φ = 2651352.

The previous prime is 6628379. The next prime is 6628403. The reversal of 6628390 is 938266.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331410 + ... + 331429.

It is an arithmetic number, because the mean of its divisors is an integer number (1491390).

Almost surely, 2^6628390 is an apocalyptic number.

6628390 is a deficient number, since it is larger than the sum of its proper divisors (5302730).

6628390 is a wasteful number, since it uses less digits than its factorization.

6628390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662846.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 6628390 is about 2574.5659828406. The cubic root of 6628390 is about 187.8463169875.

The spelling of 6628390 in words is "six million, six hundred twenty-eight thousand, three hundred ninety".