74138005 has 4 divisors (see below), whose sum is σ = 88965612. Its totient is φ = 59310400.

The previous prime is 74137991. The next prime is 74138017. The reversal of 74138005 is 50083147.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50083147 = 317 ⋅157991.

It can be written as a sum of positive squares in 2 ways, for example, as 21473956 + 52664049 = 4634^2 + 7257^2 .

It is not a de Polignac number, because 74138005 - 2¹³ = 74129813 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, 7413796 + ... + 7413805.

It is an arithmetic number, because the mean of its divisors is an integer number (22241403).

Almost surely, 2^74138005 is an apocalyptic number.

It is an amenable number.

74138005 is a deficient number, since it is larger than the sum of its proper divisors (14827607).

74138005 is a wasteful number, since it uses less digits than its factorization.

74138005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14827606.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 74138005 is about 8610.3429083864. The cubic root of 74138005 is about 420.0944704348.

The spelling of 74138005 in words is "seventy-four million, one hundred thirty-eight thousand, five".