6446462064 has 40 divisors (see below), whose sum is σ = 19032412800. Its totient is φ = 1841846208.

The previous prime is 6446462051. The next prime is 6446462117. The reversal of 6446462064 is 4602646446.

It is a super-2 number, since 2×6446462064² = 83113746285182280192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9592614 + ... + 9593285.

It is an arithmetic number, because the mean of its divisors is an integer number (475810320).

Almost surely, 2^6446462064 is an apocalyptic number.

It is an amenable number.

6446462064 is an abundant number, since it is smaller than the sum of its proper divisors (12585950736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6446462064 is a wasteful number, since it uses less digits than its factorization.

6446462064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19185917 (or 19185911 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 42.

The square root of 6446462064 is about 80289.8627723326. The cubic root of 6446462064 is about 1861.1175755697.

The spelling of 6446462064 in words is "six billion, four hundred forty-six million, four hundred sixty-two thousand, sixty-four".