100686479 has 4 divisors (see below), whose sum is σ = 105064176. Its totient is φ = 96308784.

The previous prime is 100686473. The next prime is 100686493. The reversal of 100686479 is 974686001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 974686001 = 607 ⋅1605743.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100686479 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 (100686473) 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, 2188814 + ... + 2188859.

It is an arithmetic number, because the mean of its divisors is an integer number (26266044).

Almost surely, 2^100686479 is an apocalyptic number.

100686479 is a deficient number, since it is larger than the sum of its proper divisors (4377697).

100686479 is an equidigital number, since it uses as much as digits as its factorization.

100686479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4377696.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 100686479 is about 10034.2652446505. The cubic root of 100686479 is about 465.2185799366.

The spelling of 100686479 in words is "one hundred million, six hundred eighty-six thousand, four hundred seventy-nine".