6508945 has 8 divisors (see below), whose sum is σ = 7888680. Its totient is φ = 5155200.

The previous prime is 6508937. The next prime is 6508949. The reversal of 6508945 is 5498056.

It can be written as a sum of positive squares in 4 ways, for example, as 2663424 + 3845521 = 1632^2 + 1961^2 .

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

It is not a de Polignac number, because 6508945 - 2³ = 6508937 is a prime.

It is an Ulam number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (6508949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5940 + ... + 6949.

It is an arithmetic number, because the mean of its divisors is an integer number (986085).

Almost surely, 2^6508945 is an apocalyptic number.

It is an amenable number.

6508945 is a deficient number, since it is larger than the sum of its proper divisors (1379735).

6508945 is a wasteful number, since it uses less digits than its factorization.

6508945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12995.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 6508945 is about 2551.2634125076. The cubic root of 6508945 is about 186.7111270938.

The spelling of 6508945 in words is "six million, five hundred eight thousand, nine hundred forty-five".