10006405 has 4 divisors (see below), whose sum is σ = 12007692. Its totient is φ = 8005120.

The previous prime is 10006351. The next prime is 10006417. The reversal of 10006405 is 50460001.

10006405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50460001 = 563 ⋅89627.

It can be written as a sum of positive squares in 2 ways, for example, as 1256641 + 8749764 = 1121^2 + 2958^2 .

It is not a de Polignac number, because 10006405 - 2⁷ = 10006277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1000636 + ... + 1000645.

It is an arithmetic number, because the mean of its divisors is an integer number (3001923).

Almost surely, 2^10006405 is an apocalyptic number.

It is an amenable number.

10006405 is a deficient number, since it is larger than the sum of its proper divisors (2001287).

10006405 is an equidigital number, since it uses as much as digits as its factorization.

10006405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001286.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 10006405 is about 3163.2902174793. The cubic root of 10006405 is about 215.4894563669.

Adding to 10006405 its reverse (50460001), we get a palindrome (60466406).

The spelling of 10006405 in words is "ten million, six thousand, four hundred five".