74536289 has 4 divisors (see below), whose sum is σ = 74623920. Its totient is φ = 74448660.

The previous prime is 74536229. The next prime is 74536291. The reversal of 74536289 is 98263547.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74536289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74536229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42527 + ... + 44244.

It is an arithmetic number, because the mean of its divisors is an integer number (18655980).

Almost surely, 2^74536289 is an apocalyptic number.

It is an amenable number.

74536289 is a deficient number, since it is larger than the sum of its proper divisors (87631).

74536289 is an equidigital number, since it uses as much as digits as its factorization.

74536289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87630.

The product of its digits is 362880, while the sum is 44.

The square root of 74536289 is about 8633.4401602142. The cubic root of 74536289 is about 420.8454041261.

The spelling of 74536289 in words is "seventy-four million, five hundred thirty-six thousand, two hundred eighty-nine".