100864705 has 4 divisors (see below), whose sum is σ = 121037652. Its totient is φ = 80691760.

The previous prime is 100864703. The next prime is 100864721. The reversal of 100864705 is 507468001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 507468001 = 12821 ⋅39581.

It can be written as a sum of positive squares in 2 ways, for example, as 52186176 + 48678529 = 7224^2 + 6977^2 .

It is not a de Polignac number, because 100864705 - 2¹ = 100864703 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100864703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10086466 + ... + 10086475.

It is an arithmetic number, because the mean of its divisors is an integer number (30259413).

Almost surely, 2^100864705 is an apocalyptic number.

It is an amenable number.

100864705 is a deficient number, since it is larger than the sum of its proper divisors (20172947).

100864705 is an equidigital number, since it uses as much as digits as its factorization.

100864705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20172946.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 100864705 is about 10043.1421875825. The cubic root of 100864705 is about 465.4929139326.

The spelling of 100864705 in words is "one hundred million, eight hundred sixty-four thousand, seven hundred five".