6400875740 has 48 divisors (see below), whose sum is σ = 15389197824. Its totient is φ = 2190715200.

The previous prime is 6400875739. The next prime is 6400875749. The reversal of 6400875740 is 475780046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6400875749) 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, 39905 + ... + 119975.

It is an arithmetic number, because the mean of its divisors is an integer number (320608288).

Almost surely, 2^6400875740 is an apocalyptic number.

It is an amenable number.

6400875740 is an abundant number, since it is smaller than the sum of its proper divisors (8988322084).

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

6400875740 is a wasteful number, since it uses less digits than its factorization.

6400875740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80658 (or 80656 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 41.

The square root of 6400875740 is about 80005.4731877763. The cubic root of 6400875740 is about 1856.7202134371.

The spelling of 6400875740 in words is "six billion, four hundred million, eight hundred seventy-five thousand, seven hundred forty".