1997713 has 2 divisors, whose sum is σ = 1997714. Its totient is φ = 1997712.

The previous prime is 1997707. The next prime is 1997719. The reversal of 1997713 is 3177991.

It is a balanced prime because it is at equal distance from previous prime (1997707) and next prime (1997719).

It can be written as a sum of positive squares in only one way, i.e., 1993744 + 3969 = 1412^2 + 63^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1997713 is a prime.

It is not a weakly prime, because it can be changed into another prime (1997719) 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 as a sum of consecutive naturals, namely, 998856 + 998857.

It is an arithmetic number, because the mean of its divisors is an integer number (998857).

2^1997713 is an apocalyptic number.

It is an amenable number.

1997713 is a deficient number, since it is larger than the sum of its proper divisors (1).

1997713 is an equidigital number, since it uses as much as digits as its factorization.

1997713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11907, while the sum is 37.

The square root of 1997713 is about 1413.4047544847. The cubic root of 1997713 is about 125.9440626820.

The spelling of 1997713 in words is "one million, nine hundred ninety-seven thousand, seven hundred thirteen".