997612223 has 2 divisors, whose sum is σ = 997612224. Its totient is φ = 997612222.

The previous prime is 997612199. The next prime is 997612229. The reversal of 997612223 is 322216799.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 997612223 - 2⁶ = 997612159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997612229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498806111 + 498806112.

It is an arithmetic number, because the mean of its divisors is an integer number (498806112).

Almost surely, 2^997612223 is an apocalyptic number.

997612223 is a deficient number, since it is larger than the sum of its proper divisors (1).

997612223 is an equidigital number, since it uses as much as digits as its factorization.

997612223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 41.

The square root of 997612223 is about 31584.9999683394. Note that the first 4 decimals coincide. The cubic root of 997612223 is about 999.2034399940.

The spelling of 997612223 in words is "nine hundred ninety-seven million, six hundred twelve thousand, two hundred twenty-three".