1345885 has 4 divisors (see below), whose sum is σ = 1615068. Its totient is φ = 1076704.

The previous prime is 1345879. The next prime is 1345889. The reversal of 1345885 is 5885431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 301401 + 1044484 = 549^2 + 1022^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1345885 is a prime.

It is a super-2 number, since 2×1345885² = 3622812866450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1345885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345889) 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, 134584 + ... + 134593.

It is an arithmetic number, because the mean of its divisors is an integer number (403767).

2^1345885 is an apocalyptic number.

It is an amenable number.

1345885 is a deficient number, since it is larger than the sum of its proper divisors (269183).

1345885 is an equidigital number, since it uses as much as digits as its factorization.

1345885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269182.

The product of its digits is 19200, while the sum is 34.

The square root of 1345885 is about 1160.1228383236. The cubic root of 1345885 is about 110.4085359307.

The spelling of 1345885 in words is "one million, three hundred forty-five thousand, eight hundred eighty-five".