1997359 has 16 divisors (see below), whose sum is σ = 2515968. Its totient is φ = 1543392.

The previous prime is 1997351. The next prime is 1997407. The reversal of 1997359 is 9537991.

It is a cyclic number.

It is not a de Polignac number, because 1997359 - 2³ = 1997351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1997351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4044 + ... + 4510.

It is an arithmetic number, because the mean of its divisors is an integer number (157248).

2^1997359 is an apocalyptic number.

1997359 is a deficient number, since it is larger than the sum of its proper divisors (518609).

1997359 is a wasteful number, since it uses less digits than its factorization.

1997359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534.

The product of its digits is 76545, while the sum is 43.

The square root of 1997359 is about 1413.2795194157. The cubic root of 1997359 is about 125.9366230361.

The spelling of 1997359 in words is "one million, nine hundred ninety-seven thousand, three hundred fifty-nine".