6661207 has 12 divisors (see below), whose sum is σ = 7868280. Its totient is φ = 5621616.

The previous prime is 6661189. The next prime is 6661211. The reversal of 6661207 is 7021666.

It is not a de Polignac number, because 6661207 - 2⁷ = 6661079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6661217) 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, 2269 + ... + 4297.

It is an arithmetic number, because the mean of its divisors is an integer number (655690).

Almost surely, 2^6661207 is an apocalyptic number.

6661207 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

6661207 is a deficient number, since it is larger than the sum of its proper divisors (1207073).

6661207 is a wasteful number, since it uses less digits than its factorization.

6661207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110 (or 2103 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 6661207 is about 2580.9314210184. The cubic root of 6661207 is about 188.1558143142.

The spelling of 6661207 in words is "six million, six hundred sixty-one thousand, two hundred seven".