6403424668 has 6 divisors (see below), whose sum is σ = 11205993176. Its totient is φ = 3201712332.

The previous prime is 6403424627. The next prime is 6403424681. The reversal of 6403424668 is 8664243046.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 800428080 + ... + 800428087.

Almost surely, 2^6403424668 is an apocalyptic number.

It is an amenable number.

6403424668 is a deficient number, since it is larger than the sum of its proper divisors (4802568508).

6403424668 is a wasteful number, since it uses less digits than its factorization.

6403424668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1600856171 (or 1600856169 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 43.

The square root of 6403424668 is about 80021.4013123989. The cubic root of 6403424668 is about 1856.9666389924.

The spelling of 6403424668 in words is "six billion, four hundred three million, four hundred twenty-four thousand, six hundred sixty-eight".