100845709 has 2 divisors, whose sum is σ = 100845710. Its totient is φ = 100845708.

The previous prime is 100845671. The next prime is 100845713. The reversal of 100845709 is 907548001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96236100 + 4609609 = 9810^2 + 2147^2 .

It is a cyclic number.

It is not a de Polignac number, because 100845709 - 2⁹ = 100845197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100845799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50422854 + 50422855.

It is an arithmetic number, because the mean of its divisors is an integer number (50422855).

Almost surely, 2^100845709 is an apocalyptic number.

It is an amenable number.

100845709 is a deficient number, since it is larger than the sum of its proper divisors (1).

100845709 is an equidigital number, since it uses as much as digits as its factorization.

100845709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 100845709 is about 10042.1964230939. The cubic root of 100845709 is about 465.4636897735.

The spelling of 100845709 in words is "one hundred million, eight hundred forty-five thousand, seven hundred nine".