74605139 has 16 divisors (see below), whose sum is σ = 88646400. Its totient is φ = 61432224.

The previous prime is 74605109. The next prime is 74605177. The reversal of 74605139 is 93150647.

It is not a de Polignac number, because 74605139 - 2²⁰ = 73556563 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74605099 and 74605108.

It is not an unprimeable number, because it can be changed into a prime (74605109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45272 + ... + 46890.

It is an arithmetic number, because the mean of its divisors is an integer number (5540400).

Almost surely, 2^74605139 is an apocalyptic number.

74605139 is a deficient number, since it is larger than the sum of its proper divisors (14041261).

74605139 is a wasteful number, since it uses less digits than its factorization.

74605139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1882.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 74605139 is about 8637.4266422355. The cubic root of 74605139 is about 420.9749441102.

The spelling of 74605139 in words is "seventy-four million, six hundred five thousand, one hundred thirty-nine".