1997708 has 12 divisors (see below), whose sum is σ = 3522120. Its totient is φ = 991392.

The previous prime is 1997707. The next prime is 1997713. The reversal of 1997708 is 8077991.

It is not an unprimeable number, because it can be changed into a prime (1997701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1241 + ... + 2352.

It is an arithmetic number, because the mean of its divisors is an integer number (293510).

2^1997708 is an apocalyptic number.

It is an amenable number.

1997708 is a deficient number, since it is larger than the sum of its proper divisors (1524412).

1997708 is a wasteful number, since it uses less digits than its factorization.

1997708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3736 (or 3734 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 41.

The square root of 1997708 is about 1413.4029857051. The cubic root of 1997708 is about 125.9439576084.

The spelling of 1997708 in words is "one million, nine hundred ninety-seven thousand, seven hundred eight".