997966373 has 2 divisors, whose sum is σ = 997966374. Its totient is φ = 997966372.

The previous prime is 997966367. The next prime is 997966379. The reversal of 997966373 is 373669799.

It is a balanced prime because it is at equal distance from previous prime (997966367) and next prime (997966379).

It can be written as a sum of positive squares in only one way, i.e., 727758529 + 270207844 = 26977^2 + 16438^2 .

It is a cyclic number.

It is not a de Polignac number, because 997966373 - 2¹⁰ = 997965349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997966379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498983186 + 498983187.

It is an arithmetic number, because the mean of its divisors is an integer number (498983187).

Almost surely, 2^997966373 is an apocalyptic number.

It is an amenable number.

997966373 is a deficient number, since it is larger than the sum of its proper divisors (1).

997966373 is an equidigital number, since it uses as much as digits as its factorization.

997966373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11573604, while the sum is 59.

The square root of 997966373 is about 31590.6057713365. The cubic root of 997966373 is about 999.3216642981.

The spelling of 997966373 in words is "nine hundred ninety-seven million, nine hundred sixty-six thousand, three hundred seventy-three".