6380505 has 32 divisors (see below), whose sum is σ = 11454720. Its totient is φ = 3369600.

The previous prime is 6380503. The next prime is 6380509. The reversal of 6380505 is 5050836.

It is not a de Polignac number, because 6380505 - 2¹ = 6380503 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6380503) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 20229 + ... + 20541.

It is an arithmetic number, because the mean of its divisors is an integer number (357960).

Almost surely, 2^6380505 is an apocalyptic number.

It is an amenable number.

6380505 is a deficient number, since it is larger than the sum of its proper divisors (5074215).

6380505 is a wasteful number, since it uses less digits than its factorization.

6380505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478 (or 472 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 6380505 is about 2525.9661517922. The cubic root of 6380505 is about 185.4748454108.

The spelling of 6380505 in words is "six million, three hundred eighty thousand, five hundred five".