73115993 has 2 divisors, whose sum is σ = 73115994. Its totient is φ = 73115992.

The previous prime is 73115909. The next prime is 73116007. The reversal of 73115993 is 39951137.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71707024 + 1408969 = 8468^2 + 1187^2 .

It is a cyclic number.

It is not a de Polignac number, because 73115993 - 2¹⁰ = 73114969 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3115993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36557996 + 36557997.

It is an arithmetic number, because the mean of its divisors is an integer number (36557997).

Almost surely, 2^73115993 is an apocalyptic number.

It is an amenable number.

73115993 is a deficient number, since it is larger than the sum of its proper divisors (1).

73115993 is an equidigital number, since it uses as much as digits as its factorization.

73115993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25515, while the sum is 38.

The square root of 73115993 is about 8550.7890279202. The cubic root of 73115993 is about 418.1551605322.

The spelling of 73115993 in words is "seventy-three million, one hundred fifteen thousand, nine hundred ninety-three".