6404871460 has 24 divisors (see below), whose sum is σ = 14484863736. Its totient is φ = 2364875520.

The previous prime is 6404871449. The next prime is 6404871509. The reversal of 6404871460 is 641784046.

It can be written as a sum of positive squares in 4 ways, for example, as 458302464 + 5946568996 = 21408^2 + 77114^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12316801 + ... + 12317320.

It is an arithmetic number, because the mean of its divisors is an integer number (603535989).

Almost surely, 2^6404871460 is an apocalyptic number.

It is an amenable number.

6404871460 is an abundant number, since it is smaller than the sum of its proper divisors (8079992276).

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

6404871460 is a wasteful number, since it uses less digits than its factorization.

6404871460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24634143 (or 24634141 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 6404871460 is about 80030.4408334729. The cubic root of 6404871460 is about 1857.1064830238.

The spelling of 6404871460 in words is "six billion, four hundred four million, eight hundred seventy-one thousand, four hundred sixty".