6443576634 has 32 divisors (see below), whose sum is σ = 14087416320. Its totient is φ = 1948612400.

The previous prime is 6443576627. The next prime is 6443576653. The reversal of 6443576634 is 4366753446.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67014 + ... + 131825.

It is an arithmetic number, because the mean of its divisors is an integer number (440231760).

Almost surely, 2^6443576634 is an apocalyptic number.

6443576634 is an abundant number, since it is smaller than the sum of its proper divisors (7643839686).

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

6443576634 is a wasteful number, since it uses less digits than its factorization.

6443576634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199346.

The product of its digits is 4354560, while the sum is 48.

The square root of 6443576634 is about 80271.8919298655. The cubic root of 6443576634 is about 1860.8398560054.

The spelling of 6443576634 in words is "six billion, four hundred forty-three million, five hundred seventy-six thousand, six hundred thirty-four".