6464243 has 4 divisors (see below), whose sum is σ = 6471360. Its totient is φ = 6457128.

The previous prime is 6464221. The next prime is 6464261. The reversal of 6464243 is 3424646.

It is a happy 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 a cyclic number.

It is not a de Polignac number, because 6464243 - 2⁶ = 6464179 is a prime.

It is a d-powerful number, because it can be written as 6³ + 4⁴ + 6⁸ + 4⁸ + 2¹⁹ + 4¹¹ + 3³ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6464203) 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, 1955 + ... + 4092.

It is an arithmetic number, because the mean of its divisors is an integer number (1617840).

Almost surely, 2^6464243 is an apocalyptic number.

6464243 is a deficient number, since it is larger than the sum of its proper divisors (7117).

6464243 is a wasteful number, since it uses less digits than its factorization.

6464243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7116.

The product of its digits is 13824, while the sum is 29.

The square root of 6464243 is about 2542.4875614248. The cubic root of 6464243 is about 186.2827145513.

Adding to 6464243 its reverse (3424646), we get a palindrome (9888889).

The spelling of 6464243 in words is "six million, four hundred sixty-four thousand, two hundred forty-three".