6601131 has 6 divisors (see below), whose sum is σ = 9534980. Its totient is φ = 4400748.

The previous prime is 6601129. The next prime is 6601157. The reversal of 6601131 is 1311066.

6601131 is a `hidden beast` number, since 660 + 1 + 1 + 3 + 1 = 666.

It is not a de Polignac number, because 6601131 - 2¹ = 6601129 is a prime.

It is a super-2 number, since 2×6601131² = 87149860958322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6601031) 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 5 ways as a sum of consecutive naturals, for example, 366721 + ... + 366738.

Almost surely, 2^6601131 is an apocalyptic number.

6601131 is a deficient number, since it is larger than the sum of its proper divisors (2933849).

6601131 is a wasteful number, since it uses less digits than its factorization.

6601131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733465 (or 733462 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 6601131 is about 2569.2666268801. The cubic root of 6601131 is about 187.5884595929.

Adding to 6601131 its reverse (1311066), we get a palindrome (7912197).

The spelling of 6601131 in words is "six million, six hundred one thousand, one hundred thirty-one".