6464869 has 4 divisors (see below), whose sum is σ = 6479296. Its totient is φ = 6450444.

The previous prime is 6464851. The next prime is 6464873. The reversal of 6464869 is 9684646.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6464869 - 2⁷ = 6464741 is a prime.

It is a super-2 number, since 2×6464869² = 83589062374322, which contains 22 as substring.

It is a d-powerful number, because it can be written as 6³ + 4 + 6⁴ + 4⁴ + 8³ + 6⁸ + 9⁷ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6464819) 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, 6519 + ... + 7444.

It is an arithmetic number, because the mean of its divisors is an integer number (1619824).

Almost surely, 2^6464869 is an apocalyptic number.

It is an amenable number.

6464869 is a deficient number, since it is larger than the sum of its proper divisors (14427).

6464869 is a wasteful number, since it uses less digits than its factorization.

6464869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14426.

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

The square root of 6464869 is about 2542.6106662248. The cubic root of 6464869 is about 186.2887275892.

The spelling of 6464869 in words is "six million, four hundred sixty-four thousand, eight hundred sixty-nine".