1997386 has 8 divisors (see below), whose sum is σ = 3047040. Its totient is φ = 981708.

The previous prime is 1997351. The next prime is 1997407. The reversal of 1997386 is 6837991.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8346 + ... + 8581.

It is an arithmetic number, because the mean of its divisors is an integer number (380880).

2^1997386 is an apocalyptic number.

1997386 is a deficient number, since it is larger than the sum of its proper divisors (1049654).

1997386 is a wasteful number, since it uses less digits than its factorization.

1997386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16988.

The product of its digits is 81648, while the sum is 43.

The square root of 1997386 is about 1413.2890716340. The cubic root of 1997386 is about 125.9371904977.

The spelling of 1997386 in words is "one million, nine hundred ninety-seven thousand, three hundred eighty-six".