1340668 has 12 divisors (see below), whose sum is σ = 2681392. Its totient is φ = 574560.

The previous prime is 1340653. The next prime is 1340681. The reversal of 1340668 is 8660431.

1340668 is nontrivially palindromic in base 6.

1340668 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 47881 = 1340668 / (1 + 3 + 4 + 0 + 6 + 6 + 8).

It is a zygodrome in base 6.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23913 + ... + 23968.

2^1340668 is an apocalyptic number.

It is an amenable number.

1340668 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1340668 is a wasteful number, since it uses less digits than its factorization.

1340668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47892 (or 47890 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1340668 is about 1157.8721863833. The cubic root of 1340668 is about 110.2656938151.

The spelling of 1340668 in words is "one million, three hundred forty thousand, six hundred sixty-eight".