100066643 has 4 divisors (see below), whose sum is σ = 100729488. Its totient is φ = 99403800.

The previous prime is 100066627. The next prime is 100066651. The reversal of 100066643 is 346660001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100066643 - 2⁴ = 100066627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100066613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331196 + ... + 331497.

It is an arithmetic number, because the mean of its divisors is an integer number (25182372).

Almost surely, 2^100066643 is an apocalyptic number.

100066643 is a deficient number, since it is larger than the sum of its proper divisors (662845).

100066643 is an equidigital number, since it uses as much as digits as its factorization.

100066643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662844.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 100066643 is about 10003.3315950237. The cubic root of 100066643 is about 464.2619702661.

The spelling of 100066643 in words is "one hundred million, sixty-six thousand, six hundred forty-three".