643334596 has 6 divisors (see below), whose sum is σ = 1125835550. Its totient is φ = 321667296.

The previous prime is 643334551. The next prime is 643334641. The reversal of 643334596 is 695433346.

It is an interprime number because it is at equal distance from previous prime (643334551) and next prime (643334641).

It can be written as a sum of positive squares in only one way, i.e., 634334596 + 9000000 = 25186^2 + 3000^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80416821 + ... + 80416828.

Almost surely, 2^643334596 is an apocalyptic number.

It is an amenable number.

643334596 is a deficient number, since it is larger than the sum of its proper divisors (482500954).

643334596 is a wasteful number, since it uses less digits than its factorization.

643334596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160833653 (or 160833651 counting only the distinct ones).

The product of its digits is 699840, while the sum is 43.

The square root of 643334596 is about 25364.0413972222. The cubic root of 643334596 is about 863.2679860233.

The spelling of 643334596 in words is "six hundred forty-three million, three hundred thirty-four thousand, five hundred ninety-six".