997723703 has 2 divisors, whose sum is σ = 997723704. Its totient is φ = 997723702.

The previous prime is 997723681. The next prime is 997723823. The reversal of 997723703 is 307327799.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (307327799) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-997723703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997729703) 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, 498861851 + 498861852.

It is an arithmetic number, because the mean of its divisors is an integer number (498861852).

Almost surely, 2^997723703 is an apocalyptic number.

997723703 is a deficient number, since it is larger than the sum of its proper divisors (1).

997723703 is an equidigital number, since it uses as much as digits as its factorization.

997723703 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 500094, while the sum is 47.

The square root of 997723703 is about 31586.7646807963. The cubic root of 997723703 is about 999.2406578788.

The spelling of 997723703 in words is "nine hundred ninety-seven million, seven hundred twenty-three thousand, seven hundred three".