1718401 has 2 divisors, whose sum is σ = 1718402. Its totient is φ = 1718400.

The previous prime is 1718393. The next prime is 1718407. The reversal of 1718401 is 1048171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1703025 + 15376 = 1305^2 + 124^2 .

It is a cyclic number.

It is not a de Polignac number, because 1718401 - 2³ = 1718393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1718407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 859200 + 859201.

It is an arithmetic number, because the mean of its divisors is an integer number (859201).

2^1718401 is an apocalyptic number.

It is an amenable number.

1718401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1718401 is an equidigital number, since it uses as much as digits as its factorization.

1718401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 1718401 is about 1310.8779500777. The cubic root of 1718401 is about 119.7773882146. Note that the first 3 decimals are identical.

The spelling of 1718401 in words is "one million, seven hundred eighteen thousand, four hundred one".