6466849 has 3 divisors (see below), whose sum is σ = 6469393. Its totient is φ = 6464306.

The previous prime is 6466847. The next prime is 6466853. The reversal of 6466849 is 9486646.

The square root of 6466849 is 2543.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 6466849 - 2¹ = 6466847 is a prime.

It is a super-3 number, since 3×6466849³ (a number of 21 digits) contains 333 as substring.

It is an Ulam number.

It is a Duffinian number.

6466849 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6466843) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1272 + ... + 3814.

Almost surely, 2^6466849 is an apocalyptic number.

6466849 is the 2543-rd square number.

6466849 is the 1272-nd centered octagonal number.

It is an amenable number.

6466849 is a deficient number, since it is larger than the sum of its proper divisors (2544).

6466849 is an frugal number, since it uses more digits than its factorization.

6466849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5086 (or 2543 counting only the distinct ones).

The product of its digits is 248832, while the sum is 43.

The cubic root of 6466849 is about 186.3077439081.

The spelling of 6466849 in words is "six million, four hundred sixty-six thousand, eight hundred forty-nine".