71106405 has 32 divisors (see below), whose sum is σ = 121512960. Its totient is φ = 35427840.

The previous prime is 71106403. The next prime is 71106433. The reversal of 71106405 is 50460117.

It is not a de Polignac number, because 71106405 - 2¹ = 71106403 is a prime.

It is a super-2 number, since 2×71106405² = 10112241664048050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71106403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10849 + ... + 16121.

It is an arithmetic number, because the mean of its divisors is an integer number (3797280).

Almost surely, 2^71106405 is an apocalyptic number.

It is an amenable number.

71106405 is a deficient number, since it is larger than the sum of its proper divisors (50406555).

71106405 is a wasteful number, since it uses less digits than its factorization.

71106405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5341.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 71106405 is about 8432.4613844357. The cubic root of 71106405 is about 414.2885278955.

The spelling of 71106405 in words is "seventy-one million, one hundred six thousand, four hundred five".