74843497 has 4 divisors (see below), whose sum is σ = 74869060. Its totient is φ = 74817936.

The previous prime is 74843477. The next prime is 74843539. The reversal of 74843497 is 79434847.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79434847 = 23 ⋅3453689.

It can be written as a sum of positive squares in 2 ways, for example, as 65626201 + 9217296 = 8101^2 + 3036^2 .

It is a cyclic number.

It is not a de Polignac number, because 74843497 - 2⁷ = 74843369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74843437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7722 + ... + 14467.

It is an arithmetic number, because the mean of its divisors is an integer number (18717265).

Almost surely, 2^74843497 is an apocalyptic number.

It is an amenable number.

74843497 is a deficient number, since it is larger than the sum of its proper divisors (25563).

74843497 is a wasteful number, since it uses less digits than its factorization.

74843497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25562.

The product of its digits is 677376, while the sum is 46.

The square root of 74843497 is about 8651.2136142856. The cubic root of 74843497 is about 421.4227956199.

The spelling of 74843497 in words is "seventy-four million, eight hundred forty-three thousand, four hundred ninety-seven".