6660884 has 6 divisors (see below), whose sum is σ = 11656554. Its totient is φ = 3330440.

The previous prime is 6660859. The next prime is 6660911. The reversal of 6660884 is 4880666.

It can be written as a sum of positive squares in only one way, i.e., 5152900 + 1507984 = 2270^2 + 1228^2 .

It is a super-2 number, since 2×6660884² = 88734751322912, which contains 22 as substring.

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, 832607 + ... + 832614.

It is an arithmetic number, because the mean of its divisors is an integer number (1942759).

Almost surely, 2^6660884 is an apocalyptic number.

It is an amenable number.

6660884 is a deficient number, since it is larger than the sum of its proper divisors (4995670).

6660884 is a wasteful number, since it uses less digits than its factorization.

6660884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665225 (or 1665223 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 6660884 is about 2580.8688459509. The cubic root of 6660884 is about 188.1527730581.

The spelling of 6660884 in words is "six million, six hundred sixty thousand, eight hundred eighty-four".