74424897 has 12 divisors (see below), whose sum is σ = 107951844. Its totient is φ = 49409280.

The previous prime is 74424781. The next prime is 74424913. The reversal of 74424897 is 79842447.

It can be written as a sum of positive squares in 2 ways, for example, as 39425841 + 34999056 = 6279^2 + 5916^2 .

It is not a de Polignac number, because 74424897 - 2¹⁰ = 74423873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74420897) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14988 + ... + 19325.

It is an arithmetic number, because the mean of its divisors is an integer number (8995987).

Almost surely, 2^74424897 is an apocalyptic number.

It is an amenable number.

74424897 is a deficient number, since it is larger than the sum of its proper divisors (33526947).

74424897 is a wasteful number, since it uses less digits than its factorization.

74424897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34560 (or 34557 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 74424897 is about 8626.9865538321. The cubic root of 74424897 is about 420.6356531255.

The spelling of 74424897 in words is "seventy-four million, four hundred twenty-four thousand, eight hundred ninety-seven".