1340761 has 2 divisors, whose sum is σ = 1340762. Its totient is φ = 1340760.

The previous prime is 1340753. The next prime is 1340767. The reversal of 1340761 is 1670431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1115136 + 225625 = 1056^2 + 475^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340761 - 2³ = 1340753 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1340767) 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, 670380 + 670381.

It is an arithmetic number, because the mean of its divisors is an integer number (670381).

2^1340761 is an apocalyptic number.

It is an amenable number.

1340761 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340761 is an equidigital number, since it uses as much as digits as its factorization.

1340761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 1340761 is about 1157.9123455599. The cubic root of 1340761 is about 110.2682434079.

The spelling of 1340761 in words is "one million, three hundred forty thousand, seven hundred sixty-one".