74106405 has 24 divisors (see below), whose sum is σ = 129472512. Its totient is φ = 39209184.

The previous prime is 74106379. The next prime is 74106407. The reversal of 74106405 is 50460147.

74106405 is a `hidden beast` number, since 7 + 4 + 10 + 640 + 5 = 666.

It is not a de Polignac number, because 74106405 - 2⁹ = 74105893 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74106407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 769 + ... + 12198.

It is an arithmetic number, because the mean of its divisors is an integer number (5394688).

Almost surely, 2^74106405 is an apocalyptic number.

It is an amenable number.

74106405 is a deficient number, since it is larger than the sum of its proper divisors (55366107).

74106405 is a wasteful number, since it uses less digits than its factorization.

74106405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13105 (or 13102 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 74106405 is about 8608.5077103991. The cubic root of 74106405 is about 420.0347760320.

The spelling of 74106405 in words is "seventy-four million, one hundred six thousand, four hundred five".