6368400687 has 16 divisors (see below), whose sum is σ = 9264759552. Its totient is φ = 3858957120.

The previous prime is 6368400683. The next prime is 6368400691. The reversal of 6368400687 is 7860048636.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6368400683) and next prime (6368400691).

It is not a de Polignac number, because 6368400687 - 2² = 6368400683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6368400683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224443 + ... + 251219.

It is an arithmetic number, because the mean of its divisors is an integer number (579047472).

Almost surely, 2^6368400687 is an apocalyptic number.

6368400687 is a deficient number, since it is larger than the sum of its proper divisors (2896358865).

6368400687 is a wasteful number, since it uses less digits than its factorization.

6368400687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33998.

The product of its (nonzero) digits is 1161216, while the sum is 48.

The square root of 6368400687 is about 79802.2599116090. The cubic root of 6368400687 is about 1853.5748444140.

The spelling of 6368400687 in words is "six billion, three hundred sixty-eight million, four hundred thousand, six hundred eighty-seven".