1321606 has 16 divisors (see below), whose sum is σ = 2329488. Its totient is φ = 554400.

The previous prime is 1321601. The next prime is 1321627. The reversal of 1321606 is 6061231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2025 + ... + 2596.

It is an arithmetic number, because the mean of its divisors is an integer number (145593).

2^1321606 is an apocalyptic number.

1321606 is a deficient number, since it is larger than the sum of its proper divisors (1007882).

1321606 is a wasteful number, since it uses less digits than its factorization.

1321606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4647.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1321606 is about 1149.6112386368. The cubic root of 1321606 is about 109.7406008939.

Adding to 1321606 its reverse (6061231), we get a palindrome (7382837).

The spelling of 1321606 in words is "one million, three hundred twenty-one thousand, six hundred six".