74749361 has 4 divisors (see below), whose sum is σ = 76769652. Its totient is φ = 72729072.

The previous prime is 74749331. The next prime is 74749369. The reversal of 74749361 is 16394747.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16394747 = 2803 ⋅5849.

It can be written as a sum of positive squares in 2 ways, for example, as 65934400 + 8814961 = 8120^2 + 2969^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74749361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74749369) 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, 1010090 + ... + 1010163.

It is an arithmetic number, because the mean of its divisors is an integer number (19192413).

Almost surely, 2^74749361 is an apocalyptic number.

It is an amenable number.

74749361 is a deficient number, since it is larger than the sum of its proper divisors (2020291).

74749361 is a wasteful number, since it uses less digits than its factorization.

74749361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020290.

The product of its digits is 127008, while the sum is 41.

The square root of 74749361 is about 8645.7712784922. The cubic root of 74749361 is about 421.2460369975.

The spelling of 74749361 in words is "seventy-four million, seven hundred forty-nine thousand, three hundred sixty-one".