1340767 has 2 divisors, whose sum is σ = 1340768. Its totient is φ = 1340766.

The previous prime is 1340761. The next prime is 1340777. The reversal of 1340767 is 7670431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1340767 - 2⁷ = 1340639 is a prime.

It is a super-2 number, since 2×1340767² = 3595312296578, which contains 22 as substring.

It is an Ulam number.

1340767 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340761) 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, 670383 + 670384.

It is an arithmetic number, because the mean of its divisors is an integer number (670384).

2^1340767 is an apocalyptic number.

1340767 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340767 is an equidigital number, since it uses as much as digits as its factorization.

1340767 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 1340767 is about 1157.9149364267. The cubic root of 1340767 is about 110.2684078937.

The spelling of 1340767 in words is "one million, three hundred forty thousand, seven hundred sixty-seven".