100644041 has 2 divisors, whose sum is σ = 100644042. Its totient is φ = 100644040.

The previous prime is 100644023. The next prime is 100644077. The reversal of 100644041 is 140446001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58446025 + 42198016 = 7645^2 + 6496^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100644041 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (100640041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50322020 + 50322021.

It is an arithmetic number, because the mean of its divisors is an integer number (50322021).

Almost surely, 2^100644041 is an apocalyptic number.

It is an amenable number.

100644041 is a deficient number, since it is larger than the sum of its proper divisors (1).

100644041 is an equidigital number, since it uses as much as digits as its factorization.

100644041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 100644041 is about 10032.1503676929. The cubic root of 100644041 is about 465.1532096216.

The spelling of 100644041 in words is "one hundred million, six hundred forty-four thousand, forty-one".