1316645 has 16 divisors (see below), whose sum is σ = 1772928. Its totient is φ = 930240.

The previous prime is 1316639. The next prime is 1316647. The reversal of 1316645 is 5466131.

It is not a de Polignac number, because 1316645 - 2⁸ = 1316389 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1712 + ... + 2358.

It is an arithmetic number, because the mean of its divisors is an integer number (110808).

2^1316645 is an apocalyptic number.

It is an amenable number.

1316645 is a deficient number, since it is larger than the sum of its proper divisors (456283).

1316645 is a wasteful number, since it uses less digits than its factorization.

1316645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700.

The product of its digits is 2160, while the sum is 26.

The square root of 1316645 is about 1147.4515240305. The cubic root of 1316645 is about 109.6031151991.

It can be divided in two parts, 131 and 6645, that added together give a palindrome (6776).

The spelling of 1316645 in words is "one million, three hundred sixteen thousand, six hundred forty-five".