997353 has 20 divisors (see below), whose sum is σ = 1703680. Its totient is φ = 569592.

The previous prime is 997343. The next prime is 997357. The reversal of 997353 is 353799.

It is not a de Polignac number, because 997353 - 2⁸ = 997097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (997357) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 313 + ... + 1446.

It is an arithmetic number, because the mean of its divisors is an integer number (85184).

2⁹⁹⁷³⁵³ is an apocalyptic number.

It is an amenable number.

997353 is a deficient number, since it is larger than the sum of its proper divisors (706327).

997353 is a wasteful number, since it uses less digits than its factorization.

997353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778 (or 1769 counting only the distinct ones).

The product of its digits is 25515, while the sum is 36.

The square root of 997353 is about 998.6756230128. The cubic root of 997353 is about 99.9116887008.

The spelling of 997353 in words is "nine hundred ninety-seven thousand, three hundred fifty-three".