101001685 has 4 divisors (see below), whose sum is σ = 121202028. Its totient is φ = 80801344.

The previous prime is 101001683. The next prime is 101001707. The reversal of 101001685 is 586100101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 66814276 + 34187409 = 8174^2 + 5847^2 .

It is a cyclic number.

It is not a de Polignac number, because 101001685 - 2¹ = 101001683 is a prime.

It is a Smith number, since the sum of its digits (22) 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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101001683) 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, 10100164 + ... + 10100173.

It is an arithmetic number, because the mean of its divisors is an integer number (30300507).

Almost surely, 2^101001685 is an apocalyptic number.

It is an amenable number.

101001685 is a deficient number, since it is larger than the sum of its proper divisors (20200343).

101001685 is an equidigital number, since it uses as much as digits as its factorization.

101001685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20200342.

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 101001685 is about 10049.9594526545. The cubic root of 101001685 is about 465.7035405551.

Adding to 101001685 its reverse (586100101), we get a palindrome (687101786).

It can be divided in two parts, 1010016 and 85, that added together give a palindrome (1010101).

The spelling of 101001685 in words is "one hundred one million, one thousand, six hundred eighty-five".