74797 has 2 divisors, whose sum is σ = 74798. Its totient is φ = 74796.

The previous prime is 74779. The next prime is 74821. The reversal of 74797 is 79747.

Together with previous prime (74779) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44521 + 30276 = 211^2 + 174^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74797 is a prime.

74797 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37398 + 37399.

It is an arithmetic number, because the mean of its divisors is an integer number (37399).

2⁷⁴⁷⁹⁷ is an apocalyptic number.

It is an amenable number.

74797 is a deficient number, since it is larger than the sum of its proper divisors (1).

74797 is an equidigital number, since it uses as much as digits as its factorization.

74797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12348, while the sum is 34.

The square root of 74797 is about 273.4904020254. The cubic root of 74797 is about 42.1335507008.

Subtracting 74797 from its reverse (79747), we obtain a triangular number (4950 = T₉₉).

The spelling of 74797 in words is "seventy-four thousand, seven hundred ninety-seven".