997373 has 8 divisors (see below), whose sum is σ = 1137528. Its totient is φ = 866304.

The previous prime is 997369. The next prime is 997379. The reversal of 997373 is 373799.

It can be written as a sum of positive squares in 4 ways, for example, as 1369 + 996004 = 37^2 + 998^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 997373 - 2² = 997369 is a prime.

It is a super-2 number, since 2×997373² = 1989505802258, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997379) 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, 2036 + ... + 2477.

It is an arithmetic number, because the mean of its divisors is an integer number (142191).

2⁹⁹⁷³⁷³ is an apocalyptic number.

It is an amenable number.

997373 is a deficient number, since it is larger than the sum of its proper divisors (140155).

997373 is a wasteful number, since it uses less digits than its factorization.

997373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4543.

The product of its digits is 35721, while the sum is 38.

The square root of 997373 is about 998.6856362239. The cubic root of 997373 is about 99.9123565420.

It can be divided in two parts, 99 and 7373, that multiplied together give a palindrome (729927).

The spelling of 997373 in words is "nine hundred ninety-seven thousand, three hundred seventy-three".