6464004646 has 24 divisors (see below), whose sum is σ = 10763155872. Its totient is φ = 2909082000.

The previous prime is 6464004643. The next prime is 6464004667.

It is a happy number.

6464004646 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 6464004599 and 6464004608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6464004643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107790 + ... + 156673.

It is an arithmetic number, because the mean of its divisors is an integer number (448464828).

Almost surely, 2^6464004646 is an apocalyptic number.

6464004646 is a deficient number, since it is larger than the sum of its proper divisors (4299151226).

6464004646 is a wasteful number, since it uses less digits than its factorization.

6464004646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264588 (or 264577 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 40.

The square root of 6464004646 is about 80399.0338623543. The cubic root of 6464004646 is about 1862.8042494182.

The spelling of 6464004646 in words is "six billion, four hundred sixty-four million, four thousand, six hundred forty-six".