1345669 has 8 divisors (see below), whose sum is σ = 1534680. Its totient is φ = 1168896.

The previous prime is 1345667. The next prime is 1345691. The reversal of 1345669 is 9665431.

1345669 is nontrivially palindromic in base 4.

It can be written as a sum of positive squares in 4 ways, for example, as 52900 + 1292769 = 230^2 + 1137^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1345669 - 2¹ = 1345667 is a prime.

It is a super-2 number, since 2×1345669² = 3621650115122, which contains 22 as substring.

It is a Duffinian number.

1345669 is a lucky number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2824 + ... + 3265.

It is an arithmetic number, because the mean of its divisors is an integer number (191835).

2^1345669 is an apocalyptic number.

It is an amenable number.

1345669 is a deficient number, since it is larger than the sum of its proper divisors (189011).

1345669 is a wasteful number, since it uses less digits than its factorization.

1345669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6119.

The product of its digits is 19440, while the sum is 34.

The square root of 1345669 is about 1160.0297409980. The cubic root of 1345669 is about 110.4026291557.

The spelling of 1345669 in words is "one million, three hundred forty-five thousand, six hundred sixty-nine".