1997065 has 8 divisors (see below), whose sum is σ = 2738880. Its totient is φ = 1369392.

The previous prime is 1997059. The next prime is 1997081. The reversal of 1997065 is 5607991.

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 1997065 - 2³ = 1997057 is a prime.

It is a super-2 number, since 2×1997065² = 7976537228450, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28495 + ... + 28564.

It is an arithmetic number, because the mean of its divisors is an integer number (342360).

2^1997065 is an apocalyptic number.

It is an amenable number.

1997065 is a deficient number, since it is larger than the sum of its proper divisors (741815).

1997065 is an equidigital number, since it uses as much as digits as its factorization.

1997065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57071.

The product of its (nonzero) digits is 17010, while the sum is 37.

The square root of 1997065 is about 1413.1755021936. The cubic root of 1997065 is about 125.9304436790.

The spelling of 1997065 in words is "one million, nine hundred ninety-seven thousand, sixty-five".