6628899 has 12 divisors (see below), whose sum is σ = 9241736. Its totient is φ = 4226112.

The previous prime is 6628879. The next prime is 6628943. The reversal of 6628899 is 9988266.

It is not a de Polignac number, because 6628899 - 2¹² = 6624803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6628819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 502 + ... + 3675.

Almost surely, 2^6628899 is an apocalyptic number.

6628899 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

6628899 is a deficient number, since it is larger than the sum of its proper divisors (2612837).

6628899 is a wasteful number, since it uses less digits than its factorization.

6628899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4226 (or 4203 counting only the distinct ones).

The product of its digits is 373248, while the sum is 48.

The square root of 6628899 is about 2574.6648325559. The cubic root of 6628899 is about 187.8511251600.

The spelling of 6628899 in words is "six million, six hundred twenty-eight thousand, eight hundred ninety-nine".