74997 has 12 divisors (see below), whose sum is σ = 116844. Its totient is φ = 46080.

The previous prime is 74959. The next prime is 75011. The reversal of 74997 is 79947.

It can be written as a sum of positive squares in 2 ways, for example, as 40401 + 34596 = 201^2 + 186^2 .

It is not a de Polignac number, because 74997 - 2⁶ = 74933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74197) 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, 204 + ... + 437.

It is an arithmetic number, because the mean of its divisors is an integer number (9737).

2⁷⁴⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

74997 is a deficient number, since it is larger than the sum of its proper divisors (41847).

74997 is a wasteful number, since it uses less digits than its factorization.

74997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660 (or 657 counting only the distinct ones).

The product of its digits is 15876, while the sum is 36.

The square root of 74997 is about 273.8558014722. The cubic root of 74997 is about 42.1710709691.

Subtracting 74997 from its reverse (79947), we obtain a triangular number (4950 = T₉₉).

The spelling of 74997 in words is "seventy-four thousand, nine hundred ninety-seven".