6599966 has 8 divisors (see below), whose sum is σ = 9963480. Its totient is φ = 3278808.

The previous prime is 6599963. The next prime is 6599981. The reversal of 6599966 is 6699956.

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 not an unprimeable number, because it can be changed into a prime (6599963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10196 + ... + 10823.

It is an arithmetic number, because the mean of its divisors is an integer number (1245435).

Almost surely, 2^6599966 is an apocalyptic number.

6599966 is a deficient number, since it is larger than the sum of its proper divisors (3363514).

6599966 is a wasteful number, since it uses less digits than its factorization.

6599966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21178.

The product of its digits is 787320, while the sum is 50.

The square root of 6599966 is about 2569.0398984835. The cubic root of 6599966 is about 187.5774234329.

The spelling of 6599966 in words is "six million, five hundred ninety-nine thousand, nine hundred sixty-six".