1340566 has 8 divisors (see below), whose sum is σ = 2020320. Its totient is φ = 667128.

The previous prime is 1340561. The next prime is 1340587. The reversal of 1340566 is 6650431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1340566.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1006 + ... + 1921.

It is an arithmetic number, because the mean of its divisors is an integer number (252540).

2^1340566 is an apocalyptic number.

1340566 is a deficient number, since it is larger than the sum of its proper divisors (679754).

1340566 is a wasteful number, since it uses less digits than its factorization.

1340566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3158.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1340566 is about 1157.8281392331. The cubic root of 1340566 is about 110.2628973519.

Adding to 1340566 its reverse (6650431), we get a palindrome (7990997).

The spelling of 1340566 in words is "one million, three hundred forty thousand, five hundred sixty-six".