1356973 has 2 divisors, whose sum is σ = 1356974. Its totient is φ = 1356972.

The previous prime is 1356947. The next prime is 1357001. The reversal of 1356973 is 3796531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 751689 + 605284 = 867^2 + 778^2 .

It is an emirp because it is prime and its reverse (3796531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1356973 - 2⁹ = 1356461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1356913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678486 + 678487.

It is an arithmetic number, because the mean of its divisors is an integer number (678487).

2^1356973 is an apocalyptic number.

It is an amenable number.

1356973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1356973 is an equidigital number, since it uses as much as digits as its factorization.

1356973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17010, while the sum is 34.

The square root of 1356973 is about 1164.8918404728. The cubic root of 1356973 is about 110.7109053227.

The spelling of 1356973 in words is "one million, three hundred fifty-six thousand, nine hundred seventy-three".