6660567 has 12 divisors (see below), whose sum is σ = 9931584. Its totient is φ = 4296960.

The previous prime is 6660557. The next prime is 6660587. The reversal of 6660567 is 7650666.

It is not a de Polignac number, because 6660567 - 2⁴ = 6660551 is a prime.

It is a super-2 number, since 2×6660567² = 88726305522978, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6660557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11658 + ... + 12215.

It is an arithmetic number, because the mean of its divisors is an integer number (827632).

Almost surely, 2^6660567 is an apocalyptic number.

6660567 is a deficient number, since it is larger than the sum of its proper divisors (3271017).

6660567 is a wasteful number, since it uses less digits than its factorization.

6660567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23910 (or 23907 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 6660567 is about 2580.8074317934. The cubic root of 6660567 is about 188.1497882003.

Subtracting 6660567 from its reverse (7650666), we obtain a palindrome (990099).

It can be divided in two parts, 6660 and 567, that added together give a palindrome (7227).

The spelling of 6660567 in words is "six million, six hundred sixty thousand, five hundred sixty-seven".