643010133 has 4 divisors (see below), whose sum is σ = 857346848. Its totient is φ = 428673420.

The previous prime is 643010131. The next prime is 643010191. The reversal of 643010133 is 331010346.

643010133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 643010133 - 2¹ = 643010131 is a prime.

It is a super-2 number, since 2×643010133² = 826924062281355378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (643010131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107168353 + ... + 107168358.

It is an arithmetic number, because the mean of its divisors is an integer number (214336712).

Almost surely, 2^643010133 is an apocalyptic number.

It is an amenable number.

643010133 is a deficient number, since it is larger than the sum of its proper divisors (214336715).

643010133 is a wasteful number, since it uses less digits than its factorization.

643010133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214336714.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 643010133 is about 25357.6444686804. The cubic root of 643010133 is about 863.1228331359.

Adding to 643010133 its reverse (331010346), we get a palindrome (974020479).

The spelling of 643010133 in words is "six hundred forty-three million, ten thousand, one hundred thirty-three".