642833216 has 14 divisors (see below), whose sum is σ = 1275622290. Its totient is φ = 321416576.

The previous prime is 642833179. The next prime is 642833231. The reversal of 642833216 is 612338246.

It can be written as a sum of positive squares in only one way, i.e., 603193600 + 39639616 = 24560^2 + 6296^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5022071 + ... + 5022198.

Almost surely, 2^642833216 is an apocalyptic number.

It is an amenable number.

642833216 is a deficient number, since it is larger than the sum of its proper divisors (632789074).

642833216 is a wasteful number, since it uses less digits than its factorization.

642833216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10044281 (or 10044271 counting only the distinct ones).

The product of its digits is 41472, while the sum is 35.

The square root of 642833216 is about 25354.1557934789. The cubic root of 642833216 is about 863.0436663643.

The spelling of 642833216 in words is "six hundred forty-two million, eight hundred thirty-three thousand, two hundred sixteen".