6661244 has 6 divisors (see below), whose sum is σ = 11657184. Its totient is φ = 3330620.

The previous prime is 6661243. The next prime is 6661273. The reversal of 6661244 is 4421666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6661243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 832652 + ... + 832659.

It is an arithmetic number, because the mean of its divisors is an integer number (1942864).

Almost surely, 2^6661244 is an apocalyptic number.

It is an amenable number.

6661244 is a deficient number, since it is larger than the sum of its proper divisors (4995940).

6661244 is a wasteful number, since it uses less digits than its factorization.

6661244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665315 (or 1665313 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 6661244 is about 2580.9385889633. The cubic root of 6661244 is about 188.1561626872.

The spelling of 6661244 in words is "six million, six hundred sixty-one thousand, two hundred forty-four".