74105689 has 6 divisors (see below), whose sum is σ = 86204634. Its totient is φ = 63519120.

The previous prime is 74105677. The next prime is 74105729. The reversal of 74105689 is 98650147.

It can be written as a sum of positive squares in only one way, i.e., 70560000 + 3545689 = 8400^2 + 1883^2 .

It is not a de Polignac number, because 74105689 - 2¹¹ = 74103641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74105659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 756132 + ... + 756229.

It is an arithmetic number, because the mean of its divisors is an integer number (14367439).

Almost surely, 2^74105689 is an apocalyptic number.

It is an amenable number.

74105689 is a deficient number, since it is larger than the sum of its proper divisors (12098945).

74105689 is a wasteful number, since it uses less digits than its factorization.

74105689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512375 (or 1512368 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 74105689 is about 8608.4661235321. The cubic root of 74105689 is about 420.0334232661.

The spelling of 74105689 in words is "seventy-four million, one hundred five thousand, six hundred eighty-nine".