100682405 has 4 divisors (see below), whose sum is σ = 120818892. Its totient is φ = 80545920.

The previous prime is 100682401. The next prime is 100682437. The reversal of 100682405 is 504286001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 504286001 = 5099 ⋅98899.

It can be written as a sum of positive squares in 2 ways, for example, as 34845409 + 65836996 = 5903^2 + 8114^2 .

It is not a de Polignac number, because 100682405 - 2² = 100682401 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 (100682401) 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, 10068236 + ... + 10068245.

It is an arithmetic number, because the mean of its divisors is an integer number (30204723).

Almost surely, 2^100682405 is an apocalyptic number.

It is an amenable number.

100682405 is a deficient number, since it is larger than the sum of its proper divisors (20136487).

100682405 is an equidigital number, since it uses as much as digits as its factorization.

100682405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20136486.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 100682405 is about 10034.0622381965. The cubic root of 100682405 is about 465.2123052574.

The spelling of 100682405 in words is "one hundred million, six hundred eighty-two thousand, four hundred five".