1370861 has 2 divisors, whose sum is σ = 1370862. Its totient is φ = 1370860.

The previous prime is 1370857. The next prime is 1370891. The reversal of 1370861 is 1680731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 866761 + 504100 = 931^2 + 710^2 .

It is a cyclic number.

It is not a de Polignac number, because 1370861 - 2² = 1370857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1370861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1370821) 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, 685430 + 685431.

It is an arithmetic number, because the mean of its divisors is an integer number (685431).

2^1370861 is an apocalyptic number.

It is an amenable number.

1370861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1370861 is an equidigital number, since it uses as much as digits as its factorization.

1370861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 1370861 is about 1170.8377342741. The cubic root of 1370861 is about 111.0873159786.

The spelling of 1370861 in words is "one million, three hundred seventy thousand, eight hundred sixty-one".