1364861 has 2 divisors, whose sum is σ = 1364862. Its totient is φ = 1364860.

The previous prime is 1364821. The next prime is 1364897. The reversal of 1364861 is 1684631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1144900 + 219961 = 1070^2 + 469^2 .

It is a cyclic number.

It is not a de Polignac number, because 1364861 - 2¹⁰ = 1363837 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1364821) 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, 682430 + 682431.

It is an arithmetic number, because the mean of its divisors is an integer number (682431).

2^1364861 is an apocalyptic number.

It is an amenable number.

1364861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1364861 is an equidigital number, since it uses as much as digits as its factorization.

1364861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 29.

The square root of 1364861 is about 1168.2726565319. The cubic root of 1364861 is about 110.9250095440.

The spelling of 1364861 in words is "one million, three hundred sixty-four thousand, eight hundred sixty-one".