74705289 has 8 divisors (see below), whose sum is σ = 99649920. Its totient is φ = 49782096.

The previous prime is 74705273. The next prime is 74705291. The reversal of 74705289 is 98250747.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 74705289 - 2⁴ = 74705273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74705289.

It is not an unprimeable number, because it can be changed into a prime (74705209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6567 + ... + 13875.

It is an arithmetic number, because the mean of its divisors is an integer number (12456240).

Almost surely, 2^74705289 is an apocalyptic number.

It is an amenable number.

74705289 is a deficient number, since it is larger than the sum of its proper divisors (24944631).

74705289 is a wasteful number, since it uses less digits than its factorization.

74705289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10719.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 74705289 is about 8643.2221422338. Note that the first 3 decimals coincide. The cubic root of 74705289 is about 421.1632322531.

The spelling of 74705289 in words is "seventy-four million, seven hundred five thousand, two hundred eighty-nine".