6400487066 has 8 divisors (see below), whose sum is σ = 9716402304. Its totient is φ = 3161686300.

The previous prime is 6400487057. The next prime is 6400487077. The reversal of 6400487066 is 6607840046.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19278410 + ... + 19278741.

It is an arithmetic number, because the mean of its divisors is an integer number (1214550288).

Almost surely, 2^6400487066 is an apocalyptic number.

6400487066 is a deficient number, since it is larger than the sum of its proper divisors (3315915238).

6400487066 is a wasteful number, since it uses less digits than its factorization.

6400487066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38557236.

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 6400487066 is about 80003.0441045839. The cubic root of 6400487066 is about 1856.6826314192.

The spelling of 6400487066 in words is "six billion, four hundred million, four hundred eighty-seven thousand, sixty-six".