6460636505 has 8 divisors (see below), whose sum is σ = 7757965512. Its totient is φ = 5165041408.

The previous prime is 6460636447. The next prime is 6460636517. The reversal of 6460636505 is 5056360646.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 449270416 + 6011366089 = 21196^2 + 77533^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6460636505 is a prime.

It is a Duffinian number.

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, 425264 + ... + 440193.

It is an arithmetic number, because the mean of its divisors is an integer number (969745689).

Almost surely, 2^6460636505 is an apocalyptic number.

It is an amenable number.

6460636505 is a deficient number, since it is larger than the sum of its proper divisors (1297329007).

6460636505 is a wasteful number, since it uses less digits than its factorization.

6460636505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866955.

The product of its (nonzero) digits is 388800, while the sum is 41.

The square root of 6460636505 is about 80378.0847308519. The cubic root of 6460636505 is about 1862.4806482982.

The spelling of 6460636505 in words is "six billion, four hundred sixty million, six hundred thirty-six thousand, five hundred five".