100936861 has 4 divisors (see below), whose sum is σ = 101301532. Its totient is φ = 100572192.

The previous prime is 100936859. The next prime is 100936879. The reversal of 100936861 is 168639001.

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

It can be written as a sum of positive squares in 2 ways, for example, as 67076100 + 33860761 = 8190^2 + 5819^2 .

It is a cyclic number.

It is not a de Polignac number, because 100936861 - 2¹ = 100936859 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100936841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181920 + ... + 182473.

It is an arithmetic number, because the mean of its divisors is an integer number (25325383).

Almost surely, 2^100936861 is an apocalyptic number.

It is an amenable number.

100936861 is a deficient number, since it is larger than the sum of its proper divisors (364671).

100936861 is an equidigital number, since it uses as much as digits as its factorization.

100936861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364670.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 100936861 is about 10046.7338473755. The cubic root of 100936861 is about 465.6038880027.

The spelling of 100936861 in words is "one hundred million, nine hundred thirty-six thousand, eight hundred sixty-one".