1340667 has 12 divisors (see below), whose sum is σ = 1949584. Its totient is φ = 887760.

The previous prime is 1340653. The next prime is 1340681. The reversal of 1340667 is 7660431.

It is an interprime number because it is at equal distance from previous prime (1340653) and next prime (1340681).

It is not a de Polignac number, because 1340667 - 2⁸ = 1340411 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1340667.

It is not an unprimeable number, because it can be changed into a prime (1340617) 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 in 11 ways as a sum of consecutive naturals, for example, 1218 + ... + 2040.

2^1340667 is an apocalyptic number.

1340667 is a deficient number, since it is larger than the sum of its proper divisors (608917).

1340667 is a wasteful number, since it uses less digits than its factorization.

1340667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010 (or 1007 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 1340667 is about 1157.8717545566. The cubic root of 1340667 is about 110.2656663994.

The spelling of 1340667 in words is "one million, three hundred forty thousand, six hundred sixty-seven".