6646001131 has 32 divisors (see below), whose sum is σ = 8812039680. Its totient is φ = 4852569600.

The previous prime is 6646001107. The next prime is 6646001143. The reversal of 6646001131 is 1311006466.

It is a cyclic number.

It is not a de Polignac number, because 6646001131 - 2⁵ = 6646001099 is a prime.

It is a super-2 number, since 2×6646001131² = 88338662066506558322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6646001131.

It is not an unprimeable number, because it can be changed into a prime (6646001101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 288676 + ... + 310846.

It is an arithmetic number, because the mean of its divisors is an integer number (275376240).

Almost surely, 2^6646001131 is an apocalyptic number.

6646001131 is a deficient number, since it is larger than the sum of its proper divisors (2166038549).

6646001131 is a wasteful number, since it uses less digits than its factorization.

6646001131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22435.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 6646001131 is about 81523.0098254474. The cubic root of 6646001131 is about 1880.1253435178.

Adding to 6646001131 its reverse (1311006466), we get a palindrome (7957007597).

The spelling of 6646001131 in words is "six billion, six hundred forty-six million, one thousand, one hundred thirty-one".