6661264 has 20 divisors (see below), whose sum is σ = 12963456. Its totient is φ = 3315872.

The previous prime is 6661243. The next prime is 6661273. The reversal of 6661264 is 4621666.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3417 + ... + 4999.

Almost surely, 2^6661264 is an apocalyptic number.

It is an amenable number.

6661264 is a deficient number, since it is larger than the sum of its proper divisors (6302192).

6661264 is a wasteful number, since it uses less digits than its factorization.

6661264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1854 (or 1848 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 6661264 is about 2580.9424635199. The cubic root of 6661264 is about 188.1563509963.

The spelling of 6661264 in words is "six million, six hundred sixty-one thousand, two hundred sixty-four".