1683397 has 2 divisors, whose sum is σ = 1683398. Its totient is φ = 1683396.

The previous prime is 1683373. The next prime is 1683403. The reversal of 1683397 is 7933861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1640961 + 42436 = 1281^2 + 206^2 .

It is a cyclic number.

It is not a de Polignac number, because 1683397 - 2¹¹ = 1681349 is a prime.

It is a d-powerful number, because it can be written as 1 + 6⁸ + 8³ + 3⁶ + 3⁷ + 9 + 7³ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1683317) 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, 841698 + 841699.

It is an arithmetic number, because the mean of its divisors is an integer number (841699).

2^1683397 is an apocalyptic number.

It is an amenable number.

1683397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1683397 is an equidigital number, since it uses as much as digits as its factorization.

1683397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 37.

The square root of 1683397 is about 1297.4578991243. The cubic root of 1683397 is about 118.9585101224.

It can be divided in two parts, 1683 and 397, that added together give a triangular number (2080 = T₆₄).

The spelling of 1683397 in words is "one million, six hundred eighty-three thousand, three hundred ninety-seven".