6478845 has 16 divisors (see below), whose sum is σ = 10701312. Its totient is φ = 3343680.

The previous prime is 6478841. The next prime is 6478883. The reversal of 6478845 is 5488746.

It is not a de Polignac number, because 6478845 - 2² = 6478841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6478797 and 6478806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6478841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6502 + ... + 7431.

It is an arithmetic number, because the mean of its divisors is an integer number (668832).

Almost surely, 2^6478845 is an apocalyptic number.

It is an amenable number.

6478845 is a deficient number, since it is larger than the sum of its proper divisors (4222467).

6478845 is a wasteful number, since it uses less digits than its factorization.

6478845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13972.

The product of its digits is 215040, while the sum is 42.

The square root of 6478845 is about 2545.3575387360. The cubic root of 6478845 is about 186.4228729906.

Subtracting from 6478845 its reverse (5488746), we obtain a palindrome (990099).

The spelling of 6478845 in words is "six million, four hundred seventy-eight thousand, eight hundred forty-five".