997000073 has 2 divisors, whose sum is σ = 997000074. Its totient is φ = 997000072.

The previous prime is 997000063. The next prime is 997000079. The reversal of 997000073 is 370000799.

997000073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 995528704 + 1471369 = 31552^2 + 1213^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-997000073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 996999997 and 997000042.

It is not a weakly prime, because it can be changed into another prime (997000079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498500036 + 498500037.

It is an arithmetic number, because the mean of its divisors is an integer number (498500037).

Almost surely, 2^997000073 is an apocalyptic number.

It is an amenable number.

997000073 is a deficient number, since it is larger than the sum of its proper divisors (1).

997000073 is an equidigital number, since it uses as much as digits as its factorization.

997000073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11907, while the sum is 35.

The square root of 997000073 is about 31575.3079636605. The cubic root of 997000073 is about 998.9990227121. Note that the first 3 decimals are identical.

The spelling of 997000073 in words is "nine hundred ninety-seven million, seventy-three", and thus it is an aban number.