1340567 has 4 divisors (see below), whose sum is σ = 1343016. Its totient is φ = 1338120.

The previous prime is 1340561. The next prime is 1340587. The reversal of 1340567 is 7650431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7650431 = 43 ⋅177917.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1340567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340561) 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 in 3 ways as a sum of consecutive naturals, for example, 17 + ... + 1637.

It is an arithmetic number, because the mean of its divisors is an integer number (335754).

2^1340567 is an apocalyptic number.

1340567 is a deficient number, since it is larger than the sum of its proper divisors (2449).

1340567 is an equidigital number, since it uses as much as digits as its factorization.

1340567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2448.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 1340567 is about 1157.8285710760. The cubic root of 1340567 is about 110.2629247689.

Adding to 1340567 its reverse (7650431), we get a palindrome (8990998).

The spelling of 1340567 in words is "one million, three hundred forty thousand, five hundred sixty-seven".