6448545 has 32 divisors (see below), whose sum is σ = 11783040. Its totient is φ = 3343680.

The previous prime is 6448537. The next prime is 6448553. The reversal of 6448545 is 5458446.

6448545 is a `hidden beast` number, since 644 + 8 + 5 + 4 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (6448537) and next prime (6448553).

It is not a de Polignac number, because 6448545 - 2³ = 6448537 is a prime.

It is an Ulam number.

It is a Curzon number.

6448545 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4350 + ... + 5640.

It is an arithmetic number, because the mean of its divisors is an integer number (368220).

Almost surely, 2^6448545 is an apocalyptic number.

It is an amenable number.

6448545 is a deficient number, since it is larger than the sum of its proper divisors (5334495).

6448545 is a wasteful number, since it uses less digits than its factorization.

6448545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342 (or 1336 counting only the distinct ones).

The product of its digits is 76800, while the sum is 36.

The square root of 6448545 is about 2539.3985508384. The cubic root of 6448545 is about 186.1318004441.

Subtracting from 6448545 its reverse (5458446), we obtain a palindrome (990099).

The spelling of 6448545 in words is "six million, four hundred forty-eight thousand, five hundred forty-five".