6400687910 has 16 divisors (see below), whose sum is σ = 11710112112. Its totient is φ = 2518303200.

The previous prime is 6400687897. The next prime is 6400687967. The reversal of 6400687910 is 197860046.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5245856 + ... + 5247075.

It is an arithmetic number, because the mean of its divisors is an integer number (731882007).

Almost surely, 2^6400687910 is an apocalyptic number.

6400687910 is a deficient number, since it is larger than the sum of its proper divisors (5309424202).

6400687910 is a wasteful number, since it uses less digits than its factorization.

6400687910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10492999.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 6400687910 is about 80004.2993219739. The cubic root of 6400687910 is about 1856.7020517989.

The spelling of 6400687910 in words is "six billion, four hundred million, six hundred eighty-seven thousand, nine hundred ten".