1997695 has 8 divisors (see below), whose sum is σ = 2739744. Its totient is φ = 1369824.

The previous prime is 1997693. The next prime is 1997701. The reversal of 1997695 is 5967991.

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 1997695 - 2¹ = 1997693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1997693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28504 + ... + 28573.

It is an arithmetic number, because the mean of its divisors is an integer number (342468).

2^1997695 is an apocalyptic number.

1997695 is a deficient number, since it is larger than the sum of its proper divisors (742049).

1997695 is an equidigital number, since it uses as much as digits as its factorization.

1997695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57089.

The product of its digits is 153090, while the sum is 46.

The square root of 1997695 is about 1413.3983868676. The cubic root of 1997695 is about 125.9436844162.

The spelling of 1997695 in words is "one million, nine hundred ninety-seven thousand, six hundred ninety-five".