6464224646 has 16 divisors (see below), whose sum is σ = 10579852800. Its totient is φ = 2937719880.

The previous prime is 6464224639. The next prime is 6464224649.

6464224646 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 6464224597 and 6464224606.

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, 102455 + ... + 153053.

It is an arithmetic number, because the mean of its divisors is an integer number (661240800).

Almost surely, 2^6464224646 is an apocalyptic number.

6464224646 is a deficient number, since it is larger than the sum of its proper divisors (4115628154).

6464224646 is a wasteful number, since it uses less digits than its factorization.

6464224646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56419.

The product of its digits is 1327104, while the sum is 44.

The square root of 6464224646 is about 80400.4020263581. The cubic root of 6464224646 is about 1862.8253824623.

The spelling of 6464224646 in words is "six billion, four hundred sixty-four million, two hundred twenty-four thousand, six hundred forty-six".