6628893 has 4 divisors (see below), whose sum is σ = 8838528. Its totient is φ = 4419260.

The previous prime is 6628879. The next prime is 6628943. The reversal of 6628893 is 3988266.

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 6628893 - 2⁴ = 6628877 is a prime.

It is an Ulam number.

It is a D-number.

6628893 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6628813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1104813 + ... + 1104818.

It is an arithmetic number, because the mean of its divisors is an integer number (2209632).

Almost surely, 2^6628893 is an apocalyptic number.

It is an amenable number.

6628893 is a deficient number, since it is larger than the sum of its proper divisors (2209635).

6628893 is a wasteful number, since it uses less digits than its factorization.

6628893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2209634.

The product of its digits is 124416, while the sum is 42.

The square root of 6628893 is about 2574.6636673554. The cubic root of 6628893 is about 187.8510684835.

The spelling of 6628893 in words is "six million, six hundred twenty-eight thousand, eight hundred ninety-three".