6616899 has 6 divisors (see below), whose sum is σ = 9557756. Its totient is φ = 4411260.

The previous prime is 6616879. The next prime is 6616931. The reversal of 6616899 is 9986166.

It is not a de Polignac number, because 6616899 - 2²¹ = 4519747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6616879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 367597 + ... + 367614.

Almost surely, 2^6616899 is an apocalyptic number.

6616899 is a deficient number, since it is larger than the sum of its proper divisors (2940857).

6616899 is a wasteful number, since it uses less digits than its factorization.

6616899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735217 (or 735214 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 6616899 is about 2572.3333765280. Note that the first 4 decimals coincide. The cubic root of 6616899 is about 187.7377038560.

The spelling of 6616899 in words is "six million, six hundred sixteen thousand, eight hundred ninety-nine".