1331617 has 8 divisors (see below), whose sum is σ = 1531712. Its totient is φ = 1134000.

The previous prime is 1331611. The next prime is 1331633. The reversal of 1331617 is 7161331.

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

It is not a de Polignac number, because 1331617 - 2⁷ = 1331489 is a prime.

1331617 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1331611) 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, 742 + ... + 1792.

It is an arithmetic number, because the mean of its divisors is an integer number (191464).

2^1331617 is an apocalyptic number.

It is an amenable number.

1331617 is a deficient number, since it is larger than the sum of its proper divisors (200095).

1331617 is a wasteful number, since it uses less digits than its factorization.

1331617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239.

The product of its digits is 378, while the sum is 22.

The square root of 1331617 is about 1153.9571049220. The cubic root of 1331617 is about 110.0169946194.

Adding to 1331617 its reverse (7161331), we get a palindrome (8492948).

The spelling of 1331617 in words is "one million, three hundred thirty-one thousand, six hundred seventeen".