6464489 has 4 divisors (see below), whose sum is σ = 6483156. Its totient is φ = 6445824.

The previous prime is 6464483. The next prime is 6464501. The reversal of 6464489 is 9844646.

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 2088025 + 4376464 = 1445^2 + 2092^2 .

It is a cyclic number.

It is not a de Polignac number, because 6464489 - 2²⁰ = 5415913 is a prime.

It is a super-2 number, since 2×6464489² = 83579236062242, which contains 22 as substring.

It is a d-powerful number, because it can be written as 6⁴ + 4² + 6⁸ + 4² + 4³ + 8³ + 9⁷ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6464483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8804 + ... + 9509.

It is an arithmetic number, because the mean of its divisors is an integer number (1620789).

Almost surely, 2^6464489 is an apocalyptic number.

It is an amenable number.

6464489 is a deficient number, since it is larger than the sum of its proper divisors (18667).

6464489 is a wasteful number, since it uses less digits than its factorization.

6464489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18666.

The product of its digits is 165888, while the sum is 41.

The square root of 6464489 is about 2542.5359387824. The cubic root of 6464489 is about 186.2850775486.

The spelling of 6464489 in words is "six million, four hundred sixty-four thousand, four hundred eighty-nine".