997355 has 8 divisors (see below), whose sum is σ = 1205664. Its totient is φ = 792000.

The previous prime is 997343. The next prime is 997357. The reversal of 997355 is 553799.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 997355 - 2⁸ = 997099 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 7 ways as a sum of consecutive naturals, for example, 95 + ... + 1415.

It is an arithmetic number, because the mean of its divisors is an integer number (150708).

2⁹⁹⁷³⁵⁵ is an apocalyptic number.

997355 is a deficient number, since it is larger than the sum of its proper divisors (208309).

997355 is a wasteful number, since it uses less digits than its factorization.

997355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477.

The product of its digits is 42525, while the sum is 38.

The square root of 997355 is about 998.6766243384. The cubic root of 997355 is about 99.9117554853.

Subtracting from 997355 its reverse (553799), we obtain a square (443556 = 666²).

The spelling of 997355 in words is "nine hundred ninety-seven thousand, three hundred fifty-five".