74694589 has 2 divisors, whose sum is σ = 74694590. Its totient is φ = 74694588.

The previous prime is 74694553. The next prime is 74694611. The reversal of 74694589 is 98549647.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64080025 + 10614564 = 8005^2 + 3258^2 .

It is a cyclic number.

It is not a de Polignac number, because 74694589 - 2⁷ = 74694461 is a prime.

It is a super-3 number, since 3×74694589³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74694509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37347294 + 37347295.

It is an arithmetic number, because the mean of its divisors is an integer number (37347295).

Almost surely, 2^74694589 is an apocalyptic number.

It is an amenable number.

74694589 is a deficient number, since it is larger than the sum of its proper divisors (1).

74694589 is an equidigital number, since it uses as much as digits as its factorization.

74694589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 52.

The square root of 74694589 is about 8642.6031379440. The cubic root of 74694589 is about 421.1431236289.

The spelling of 74694589 in words is "seventy-four million, six hundred ninety-four thousand, five hundred eighty-nine".