6460425640 has 32 divisors (see below), whose sum is σ = 14669325000. Its totient is φ = 2560460544.

The previous prime is 6460425623. The next prime is 6460425659. The reversal of 6460425640 is 465240646.

It can be written as a sum of positive squares in 4 ways, for example, as 6113050596 + 347375044 = 78186^2 + 18638^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6460425640.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 736515 + ... + 745234.

Almost surely, 2^6460425640 is an apocalyptic number.

It is an amenable number.

6460425640 is an abundant number, since it is smaller than the sum of its proper divisors (8208899360).

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

6460425640 is a wasteful number, since it uses less digits than its factorization.

6460425640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481869 (or 1481865 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 37.

The square root of 6460425640 is about 80376.7730131037. The cubic root of 6460425640 is about 1862.4603852661.

The spelling of 6460425640 in words is "six billion, four hundred sixty million, four hundred twenty-five thousand, six hundred forty".