6464224645 has 8 divisors (see below), whose sum is σ = 7761148704. Its totient is φ = 5168660304.

The previous prime is 6464224639. The next prime is 6464224649. The reversal of 6464224645 is 5464224646.

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

It is a cyclic number.

It is not a de Polignac number, because 6464224645 - 2¹³ = 6464216453 is a prime.

It is a super-2 number, since 2×6464224645² = 83572400522050752050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6464224649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329439 + ... + 348508.

It is an arithmetic number, because the mean of its divisors is an integer number (970143588).

Almost surely, 2^6464224645 is an apocalyptic number.

It is an amenable number.

6464224645 is a deficient number, since it is larger than the sum of its proper divisors (1296924059).

6464224645 is a wasteful number, since it uses less digits than its factorization.

6464224645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679859.

The product of its digits is 1105920, while the sum is 43.

The square root of 6464224645 is about 80400.4020201392. The cubic root of 6464224645 is about 1862.8253823662.

Subtracting from 6464224645 its reverse (5464224646), we obtain a palindrome (999999999).

The spelling of 6464224645 in words is "six billion, four hundred sixty-four million, two hundred twenty-four thousand, six hundred forty-five".