6661268 has 6 divisors (see below), whose sum is σ = 11657226. Its totient is φ = 3330632.

The previous prime is 6661243. The next prime is 6661273. The reversal of 6661268 is 8621666.

It can be written as a sum of positive squares in only one way, i.e., 3341584 + 3319684 = 1828^2 + 1822^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 832655 + ... + 832662.

It is an arithmetic number, because the mean of its divisors is an integer number (1942871).

Almost surely, 2^6661268 is an apocalyptic number.

It is an amenable number.

6661268 is a deficient number, since it is larger than the sum of its proper divisors (4995958).

6661268 is a wasteful number, since it uses less digits than its factorization.

6661268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665321 (or 1665319 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 6661268 is about 2580.9432384305. The cubic root of 6661268 is about 188.1563886581.

The spelling of 6661268 in words is "six million, six hundred sixty-one thousand, two hundred sixty-eight".