6467905640 has 64 divisors (see below), whose sum is σ = 16904453760. Its totient is φ = 2181208320.

The previous prime is 6467905597. The next prime is 6467905643. The reversal of 6467905640 is 465097646.

It is not an unprimeable number, because it can be changed into a prime (6467905643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172262 + ... + 206421.

It is an arithmetic number, because the mean of its divisors is an integer number (264132090).

Almost surely, 2^6467905640 is an apocalyptic number.

It is an amenable number.

6467905640 is an abundant number, since it is smaller than the sum of its proper divisors (10436548120).

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

6467905640 is a wasteful number, since it uses less digits than its factorization.

6467905640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378762 (or 378758 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 47.

The square root of 6467905640 is about 80423.2904076922. The cubic root of 6467905640 is about 1863.1789050310.

The spelling of 6467905640 in words is "six billion, four hundred sixty-seven million, nine hundred five thousand, six hundred forty".