6466885 has 8 divisors (see below), whose sum is σ = 8216856. Its totient is φ = 4869120.

The previous prime is 6466883. The next prime is 6466921. The reversal of 6466885 is 5886646.

It can be written as a sum of positive squares in 4 ways, for example, as 146689 + 6320196 = 383^2 + 2514^2 .

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

It is not a de Polignac number, because 6466885 - 2¹ = 6466883 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6466883) 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 7 ways as a sum of consecutive naturals, for example, 37956 + ... + 38125.

It is an arithmetic number, because the mean of its divisors is an integer number (1027107).

Almost surely, 2^6466885 is an apocalyptic number.

It is an amenable number.

6466885 is a deficient number, since it is larger than the sum of its proper divisors (1749971).

6466885 is a wasteful number, since it uses less digits than its factorization.

6466885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76103.

The product of its digits is 276480, while the sum is 43.

The square root of 6466885 is about 2543.0070782442. The cubic root of 6466885 is about 186.3080896234.

The spelling of 6466885 in words is "six million, four hundred sixty-six thousand, eight hundred eighty-five".