74524861 has 4 divisors (see below), whose sum is σ = 74553052. Its totient is φ = 74496672.

The previous prime is 74524831. The next prime is 74524871. The reversal of 74524861 is 16842547.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 59197636 + 15327225 = 7694^2 + 3915^2 .

It is a cyclic number.

It is not a de Polignac number, because 74524861 - 2⁷ = 74524733 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74524861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74524831) 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 3 ways as a sum of consecutive naturals, for example, 9666 + ... + 15571.

It is an arithmetic number, because the mean of its divisors is an integer number (18638263).

Almost surely, 2^74524861 is an apocalyptic number.

It is an amenable number.

74524861 is a deficient number, since it is larger than the sum of its proper divisors (28191).

74524861 is a wasteful number, since it uses less digits than its factorization.

74524861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28190.

The product of its digits is 53760, while the sum is 37.

The square root of 74524861 is about 8632.7782897512. The cubic root of 74524861 is about 420.8238948400.

The spelling of 74524861 in words is "seventy-four million, five hundred twenty-four thousand, eight hundred sixty-one".