997703473 has 12 divisors (see below), whose sum is σ = 1110241524. Its totient is φ = 891237600.

The previous prime is 997703461. The next prime is 997703489. The reversal of 997703473 is 374307799.

It can be written as a sum of positive squares in 2 ways, for example, as 589178529 + 408524944 = 24273^2 + 20212^2 .

It is a de Polignac number, because none of the positive numbers 2^k-997703473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (997703173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27438 + ... + 52423.

It is an arithmetic number, because the mean of its divisors is an integer number (92520127).

Almost surely, 2^997703473 is an apocalyptic number.

It is an amenable number.

997703473 is a deficient number, since it is larger than the sum of its proper divisors (112538051).

997703473 is a wasteful number, since it uses less digits than its factorization.

997703473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79936 (or 79905 counting only the distinct ones).

The product of its (nonzero) digits is 1000188, while the sum is 49.

The square root of 997703473 is about 31586.4444501118. Note that the first 4 decimals coincide. The cubic root of 997703473 is about 999.2339042472.

The spelling of 997703473 in words is "nine hundred ninety-seven million, seven hundred three thousand, four hundred seventy-three".