100856686 has 16 divisors (see below), whose sum is σ = 173418336. Its totient is φ = 43094016.

The previous prime is 100856683. The next prime is 100856737. The reversal of 100856686 is 686658001.

It is a happy number.

It is a super-2 number, since 2×100856686² = 20344142221805192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100856683) 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, 5971 + ... + 15406.

It is an arithmetic number, because the mean of its divisors is an integer number (10838646).

Almost surely, 2^100856686 is an apocalyptic number.

100856686 is a deficient number, since it is larger than the sum of its proper divisors (72561650).

100856686 is a wasteful number, since it uses less digits than its factorization.

100856686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21723.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 100856686 is about 10042.7429520027. The cubic root of 100856686 is about 465.4805776498.

The spelling of 100856686 in words is "one hundred million, eight hundred fifty-six thousand, six hundred eighty-six".