6460635906 has 24 divisors (see below), whose sum is σ = 14001939900. Its totient is φ = 2152946016.

The previous prime is 6460635887. The next prime is 6460635913. The reversal of 6460635906 is 6095360646.

6460635906 is a `hidden beast` number, since 6 + 4 + 6 + 0 + 635 + 9 + 0 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5506382025 + 954253881 = 74205^2 + 30891^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19120 + ... + 115268.

Almost surely, 2^6460635906 is an apocalyptic number.

6460635906 is an abundant number, since it is smaller than the sum of its proper divisors (7541303994).

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

6460635906 is a wasteful number, since it uses less digits than its factorization.

6460635906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99890 (or 99887 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 45.

The square root of 6460635906 is about 80378.0810047117. The cubic root of 6460635906 is about 1862.4805907381.

The spelling of 6460635906 in words is "six billion, four hundred sixty million, six hundred thirty-five thousand, nine hundred six".