6642406002 has 32 divisors (see below), whose sum is σ = 13462783488. Its totient is φ = 2184650496.

The previous prime is 6642405997. The next prime is 6642406013. The reversal of 6642406002 is 2006042466.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129228 + ... + 173160.

It is an arithmetic number, because the mean of its divisors is an integer number (420711984).

Almost surely, 2^6642406002 is an apocalyptic number.

6642406002 is an abundant number, since it is smaller than the sum of its proper divisors (6820377486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6642406002 is a wasteful number, since it uses less digits than its factorization.

6642406002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44274.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 6642406002 is about 81500.9570618652. The cubic root of 6642406002 is about 1879.7862668217.

Adding to 6642406002 its reverse (2006042466), we get a palindrome (8648448468).

The spelling of 6642406002 in words is "six billion, six hundred forty-two million, four hundred six thousand, two".