100210685 has 8 divisors (see below), whose sum is σ = 121444056. Its totient is φ = 79374400.

The previous prime is 100210681. The next prime is 100210687. The reversal of 100210685 is 586012001.

It can be written as a sum of positive squares in 4 ways, for example, as 27994681 + 72216004 = 5291^2 + 8498^2 .

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

It is not a de Polignac number, because 100210685 - 2² = 100210681 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100210685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100210681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98714 + ... + 99723.

It is an arithmetic number, because the mean of its divisors is an integer number (15180507).

Almost surely, 2^100210685 is an apocalyptic number.

It is an amenable number.

100210685 is a deficient number, since it is larger than the sum of its proper divisors (21233371).

100210685 is a wasteful number, since it uses less digits than its factorization.

100210685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198543.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 100210685 is about 10010.5287073161. The cubic root of 100210685 is about 464.4846257526.

Adding to 100210685 its reverse (586012001), we get a palindrome (686222686).

The spelling of 100210685 in words is "one hundred million, two hundred ten thousand, six hundred eighty-five".