6400002 has 16 divisors (see below), whose sum is σ = 14628672. Its totient is φ = 1828560.

The previous prime is 6399971. The next prime is 6400013. The reversal of 6400002 is 2000046.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76149 + ... + 76232.

It is an arithmetic number, because the mean of its divisors is an integer number (914292).

Almost surely, 2^6400002 is an apocalyptic number.

6400002 is an abundant number, since it is smaller than the sum of its proper divisors (8228670).

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

6400002 is a wasteful number, since it uses less digits than its factorization.

6400002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152393.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 6400002 is about 2529.8225234194. The cubic root of 6400002 is about 185.6635726845.

Adding to 6400002 its reverse (2000046), we get a palindrome (8400048).

The spelling of 6400002 in words is "six million, four hundred thousand, two".