1380006 has 12 divisors (see below), whose sum is σ = 2990052. Its totient is φ = 459996.

The previous prime is 1379993. The next prime is 1380007. The reversal of 1380006 is 6000831.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 76667 = 1380006 / (1 + 3 + 8 + 0 + 0 + 0 + 6).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380007) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38316 + ... + 38351.

It is an arithmetic number, because the mean of its divisors is an integer number (249171).

2^1380006 is an apocalyptic number.

1380006 is an abundant number, since it is smaller than the sum of its proper divisors (1610046).

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

1380006 is a wasteful number, since it uses less digits than its factorization.

1380006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76675 (or 76672 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1380006 is about 1174.7365662139. The cubic root of 1380006 is about 111.3337895049. Note that the first 3 decimals are identical.

1380006 divided by its sum of digits (18) gives a palindrome (76667).

Adding to 1380006 its reverse (6000831), we get a palindrome (7380837).

The spelling of 1380006 in words is "one million, three hundred eighty thousand, six".