1697401 has 2 divisors, whose sum is σ = 1697402. Its totient is φ = 1697400.

The previous prime is 1697389. The next prime is 1697407. The reversal of 1697401 is 1047961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1687401 + 10000 = 1299^2 + 100^2 .

It is an emirp because it is prime and its reverse (1047961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1697401 - 2¹⁵ = 1664633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1697401.

It is not a weakly prime, because it can be changed into another prime (1697407) 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, 848700 + 848701.

It is an arithmetic number, because the mean of its divisors is an integer number (848701).

2^1697401 is an apocalyptic number.

It is an amenable number.

1697401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1697401 is an equidigital number, since it uses as much as digits as its factorization.

1697401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 1697401 is about 1302.8434288125. The cubic root of 1697401 is about 119.2874673321.

The spelling of 1697401 in words is "one million, six hundred ninety-seven thousand, four hundred one".