6465845 has 4 divisors (see below), whose sum is σ = 7759020. Its totient is φ = 5172672.

The previous prime is 6465839. The next prime is 6465847. The reversal of 6465845 is 5485646.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5080516 + 1385329 = 2254^2 + 1177^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6465845 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6465799 and 6465808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6465847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 646580 + ... + 646589.

It is an arithmetic number, because the mean of its divisors is an integer number (1939755).

Almost surely, 2^6465845 is an apocalyptic number.

It is an amenable number.

6465845 is a deficient number, since it is larger than the sum of its proper divisors (1293175).

6465845 is a wasteful number, since it uses less digits than its factorization.

6465845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1293174.

The product of its digits is 115200, while the sum is 38.

The square root of 6465845 is about 2542.8025876973. The cubic root of 6465845 is about 186.2981017750.

The spelling of 6465845 in words is "six million, four hundred sixty-five thousand, eight hundred forty-five".