1381606 has 8 divisors (see below), whose sum is σ = 2080584. Its totient is φ = 688080.

The previous prime is 1381559. The next prime is 1381609. The reversal of 1381606 is 6061831.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381609) 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, 655 + ... + 1786.

It is an arithmetic number, because the mean of its divisors is an integer number (260073).

2^1381606 is an apocalyptic number.

1381606 is a deficient number, since it is larger than the sum of its proper divisors (698978).

1381606 is a wasteful number, since it uses less digits than its factorization.

1381606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2726.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1381606 is about 1175.4173726809. The cubic root of 1381606 is about 111.3768002512.

The spelling of 1381606 in words is "one million, three hundred eighty-one thousand, six hundred six".