100661413 has 2 divisors, whose sum is σ = 100661414. Its totient is φ = 100661412.

The previous prime is 100661401. The next prime is 100661441. The reversal of 100661413 is 314166001.

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., 100661089 + 324 = 10033^2 + 18^2 .

It is a cyclic number.

It is not a de Polignac number, because 100661413 - 2⁵ = 100661381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100661453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50330706 + 50330707.

It is an arithmetic number, because the mean of its divisors is an integer number (50330707).

Almost surely, 2^100661413 is an apocalyptic number.

It is an amenable number.

100661413 is a deficient number, since it is larger than the sum of its proper divisors (1).

100661413 is an equidigital number, since it uses as much as digits as its factorization.

100661413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 100661413 is about 10033.0161467028. The cubic root of 100661413 is about 465.1799711884.

The spelling of 100661413 in words is "one hundred million, six hundred sixty-one thousand, four hundred thirteen".