73200913 has 2 divisors, whose sum is σ = 73200914. Its totient is φ = 73200912.

The previous prime is 73200893. The next prime is 73200923. The reversal of 73200913 is 31900237.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71031184 + 2169729 = 8428^2 + 1473^2 .

It is a cyclic number.

It is not a de Polignac number, because 73200913 - 2⁹ = 73200401 is a prime.

It is not a weakly prime, because it can be changed into another prime (73200923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36600456 + 36600457.

It is an arithmetic number, because the mean of its divisors is an integer number (36600457).

Almost surely, 2^73200913 is an apocalyptic number.

It is an amenable number.

73200913 is a deficient number, since it is larger than the sum of its proper divisors (1).

73200913 is an equidigital number, since it uses as much as digits as its factorization.

73200913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 73200913 is about 8555.7532105595. The cubic root of 73200913 is about 418.3169855818.

The spelling of 73200913 in words is "seventy-three million, two hundred thousand, nine hundred thirteen".