6663572 has 12 divisors (see below), whose sum is σ = 11802336. Its totient is φ = 3291480.

The previous prime is 6663557. The next prime is 6663593. The reversal of 6663572 is 2753666.

It is a congruent number.

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, 9704 + ... + 10367.

It is an arithmetic number, because the mean of its divisors is an integer number (983528).

Almost surely, 2^6663572 is an apocalyptic number.

It is an amenable number.

6663572 is a deficient number, since it is larger than the sum of its proper divisors (5138764).

6663572 is a wasteful number, since it uses less digits than its factorization.

6663572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20158 (or 20156 counting only the distinct ones).

The product of its digits is 45360, while the sum is 35.

The square root of 6663572 is about 2581.3895482860. The cubic root of 6663572 is about 188.1780793406.

The spelling of 6663572 in words is "six million, six hundred sixty-three thousand, five hundred seventy-two".