73998497 has 2 divisors, whose sum is σ = 73998498. Its totient is φ = 73998496.

The previous prime is 73998493. The next prime is 73998523. The reversal of 73998497 is 79489937.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73942801 + 55696 = 8599^2 + 236^2 .

It is an emirp because it is prime and its reverse (79489937) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73998497 - 2² = 73998493 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (73998493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36999248 + 36999249.

It is an arithmetic number, because the mean of its divisors is an integer number (36999249).

Almost surely, 2^73998497 is an apocalyptic number.

It is an amenable number.

73998497 is a deficient number, since it is larger than the sum of its proper divisors (1).

73998497 is an equidigital number, since it uses as much as digits as its factorization.

73998497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3429216, while the sum is 56.

The square root of 73998497 is about 8602.2379064985. The cubic root of 73998497 is about 419.8308029743.

The spelling of 73998497 in words is "seventy-three million, nine hundred ninety-eight thousand, four hundred ninety-seven".