1997375 has 24 divisors (see below), whose sum is σ = 2717520. Its totient is φ = 1461600.

The previous prime is 1997351. The next prime is 1997407. The reversal of 1997375 is 5737991.

It is not a de Polignac number, because 1997375 - 2⁶ = 1997311 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68861 + ... + 68889.

It is an arithmetic number, because the mean of its divisors is an integer number (113230).

2^1997375 is an apocalyptic number.

1997375 is a deficient number, since it is larger than the sum of its proper divisors (720145).

1997375 is an equidigital number, since it uses as much as digits as its factorization.

1997375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92 (or 53 counting only the distinct ones).

The product of its digits is 59535, while the sum is 41.

The square root of 1997375 is about 1413.2851799973. The cubic root of 1997375 is about 125.9369593103.

The spelling of 1997375 in words is "one million, nine hundred ninety-seven thousand, three hundred seventy-five".