6660089 has 8 divisors (see below), whose sum is σ = 7037280. Its totient is φ = 6303060.

The previous prime is 6660061. The next prime is 6660091. The reversal of 6660089 is 9800666.

It is not a de Polignac number, because 6660089 - 2⁸ = 6659833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6660029) 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, 6374 + ... + 7344.

It is an arithmetic number, because the mean of its divisors is an integer number (879660).

Almost surely, 2^6660089 is an apocalyptic number.

It is an amenable number.

6660089 is a deficient number, since it is larger than the sum of its proper divisors (377191).

6660089 is an frugal number, since it uses more digits than its factorization.

6660089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028 (or 990 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 6660089 is about 2580.7148234549. The cubic root of 6660089 is about 188.1452871946.

The spelling of 6660089 in words is "six million, six hundred sixty thousand, eighty-nine".