999600073 has 2 divisors, whose sum is σ = 999600074. Its totient is φ = 999600072.

The previous prime is 999600071. The next prime is 999600113. The reversal of 999600073 is 370006999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 697118409 + 302481664 = 26403^2 + 17392^2 .

It is a cyclic number.

It is not a de Polignac number, because 999600073 - 2¹ = 999600071 is a prime.

Together with 999600071, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (999600071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499800036 + 499800037.

It is an arithmetic number, because the mean of its divisors is an integer number (499800037).

Almost surely, 2^999600073 is an apocalyptic number.

It is an amenable number.

999600073 is a deficient number, since it is larger than the sum of its proper divisors (1).

999600073 is an equidigital number, since it uses as much as digits as its factorization.

999600073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 91854, while the sum is 43.

The square root of 999600073 is about 31616.4525682436. The cubic root of 999600073 is about 999.8666732248.

The spelling of 999600073 in words is "nine hundred ninety-nine million, six hundred thousand, seventy-three".