100686869 has 8 divisors (see below), whose sum is σ = 110286360. Its totient is φ = 91495936.

The previous prime is 100686841. The next prime is 100686877. The reversal of 100686869 is 968686001.

It can be written as a sum of positive squares in 4 ways, for example, as 33200644 + 67486225 = 5762^2 + 8215^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100686869 is a prime.

It is a super-2 number, since 2×100686869² = 20275691178046322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100686809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101624 + ... + 102609.

It is an arithmetic number, because the mean of its divisors is an integer number (13785795).

Almost surely, 2^100686869 is an apocalyptic number.

It is an amenable number.

100686869 is a deficient number, since it is larger than the sum of its proper divisors (9599491).

100686869 is a wasteful number, since it uses less digits than its factorization.

100686869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204279.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 100686869 is about 10034.2846780426. The cubic root of 100686869 is about 465.2191805966.

The spelling of 100686869 in words is "one hundred million, six hundred eighty-six thousand, eight hundred sixty-nine".