6442505 has 8 divisors (see below), whose sum is σ = 7862400. Its totient is φ = 5066416.

The previous prime is 6442493. The next prime is 6442531. The reversal of 6442505 is 5052446.

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

It is a cyclic number.

It is not a de Polignac number, because 6442505 - 2¹⁰ = 6441481 is a prime.

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, 10625 + ... + 11214.

It is an arithmetic number, because the mean of its divisors is an integer number (982800).

Almost surely, 2^6442505 is an apocalyptic number.

It is an amenable number.

6442505 is a deficient number, since it is larger than the sum of its proper divisors (1419895).

6442505 is a wasteful number, since it uses less digits than its factorization.

6442505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21903.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 6442505 is about 2538.2090142461. The cubic root of 6442505 is about 186.0736691261.

The spelling of 6442505 in words is "six million, four hundred forty-two thousand, five hundred five".