997673197 has 12 divisors (see below), whose sum is σ = 1018132416. Its totient is φ = 977477720.

The previous prime is 997673177. The next prime is 997673249. The reversal of 997673197 is 791376799.

It is not a de Polignac number, because 997673197 - 2²⁷ = 863455469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997673107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2314572 + ... + 2315002.

It is an arithmetic number, because the mean of its divisors is an integer number (84844368).

Almost surely, 2^997673197 is an apocalyptic number.

It is an amenable number.

997673197 is a deficient number, since it is larger than the sum of its proper divisors (20459219).

997673197 is an equidigital number, since it uses as much as digits as its factorization.

997673197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848 (or 681 counting only the distinct ones).

The product of its digits is 4500846, while the sum is 58.

The square root of 997673197 is about 31585.9651902550. The cubic root of 997673197 is about 999.2237966643.

The spelling of 997673197 in words is "nine hundred ninety-seven million, six hundred seventy-three thousand, one hundred ninety-seven".