1712981 has 2 divisors, whose sum is σ = 1712982. Its totient is φ = 1712980.

The previous prime is 1712969. The next prime is 1712987. The reversal of 1712981 is 1892171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1311025 + 401956 = 1145^2 + 634^2 .

It is an emirp because it is prime and its reverse (1892171) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1712981 - 2⁶ = 1712917 is a prime.

It is a super-2 number, since 2×1712981² = 5868607812722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1712987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 856490 + 856491.

It is an arithmetic number, because the mean of its divisors is an integer number (856491).

2^1712981 is an apocalyptic number.

It is an amenable number.

1712981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1712981 is an equidigital number, since it uses as much as digits as its factorization.

1712981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 29.

The square root of 1712981 is about 1308.8090005803. The cubic root of 1712981 is about 119.6513258302.

The spelling of 1712981 in words is "one million, seven hundred twelve thousand, nine hundred eighty-one".