74836589 has 2 divisors, whose sum is σ = 74836590. Its totient is φ = 74836588.

The previous prime is 74836577. The next prime is 74836609. The reversal of 74836589 is 98563847.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44222500 + 30614089 = 6650^2 + 5533^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74836589 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74836189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37418294 + 37418295.

It is an arithmetic number, because the mean of its divisors is an integer number (37418295).

Almost surely, 2^74836589 is an apocalyptic number.

It is an amenable number.

74836589 is a deficient number, since it is larger than the sum of its proper divisors (1).

74836589 is an equidigital number, since it uses as much as digits as its factorization.

74836589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 50.

The square root of 74836589 is about 8650.8143547298. The cubic root of 74836589 is about 421.4098295491.

The spelling of 74836589 in words is "seventy-four million, eight hundred thirty-six thousand, five hundred eighty-nine".