6642626441 has 16 divisors (see below), whose sum is σ = 7343831040. Its totient is φ = 5957761680.

The previous prime is 6642626399. The next prime is 6642626467. The reversal of 6642626441 is 1446262466.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6642626441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6642626141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1724780 + ... + 1728626.

It is an arithmetic number, because the mean of its divisors is an integer number (458989440).

Almost surely, 2^6642626441 is an apocalyptic number.

It is an amenable number.

6642626441 is a deficient number, since it is larger than the sum of its proper divisors (701204599).

6642626441 is a wasteful number, since it uses less digits than its factorization.

6642626441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5924.

The product of its digits is 331776, while the sum is 41.

The square root of 6642626441 is about 81502.3094212673. The cubic root of 6642626441 is about 1879.8070611755.

The spelling of 6642626441 in words is "six billion, six hundred forty-two million, six hundred twenty-six thousand, four hundred forty-one".