74345437 has 4 divisors (see below), whose sum is σ = 78718716. Its totient is φ = 69972160.

The previous prime is 74345417. The next prime is 74345459. The reversal of 74345437 is 73454347.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73454347 = 103 ⋅713149.

It can be written as a sum of positive squares in 2 ways, for example, as 52620516 + 21724921 = 7254^2 + 4661^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74345437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74345396 and 74345405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74345417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2186614 + ... + 2186647.

It is an arithmetic number, because the mean of its divisors is an integer number (19679679).

Almost surely, 2^74345437 is an apocalyptic number.

It is an amenable number.

74345437 is a deficient number, since it is larger than the sum of its proper divisors (4373279).

74345437 is a wasteful number, since it uses less digits than its factorization.

74345437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4373278.

The product of its digits is 141120, while the sum is 37.

The square root of 74345437 is about 8622.3800078633. The cubic root of 74345437 is about 420.4859021130.

The spelling of 74345437 in words is "seventy-four million, three hundred forty-five thousand, four hundred thirty-seven".