1345985 has 8 divisors (see below), whose sum is σ = 1623336. Its totient is φ = 1071360.

The previous prime is 1345973. The next prime is 1345987. The reversal of 1345985 is 5895431.

It can be written as a sum of positive squares in 4 ways, for example, as 37249 + 1308736 = 193^2 + 1144^2 .

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

It is not a de Polignac number, because 1345985 - 2⁶ = 1345921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1345987) 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, 647 + ... + 1763.

It is an arithmetic number, because the mean of its divisors is an integer number (202917).

2^1345985 is an apocalyptic number.

It is an amenable number.

1345985 is a deficient number, since it is larger than the sum of its proper divisors (277351).

1345985 is a wasteful number, since it uses less digits than its factorization.

1345985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1363.

The product of its digits is 21600, while the sum is 35.

The square root of 1345985 is about 1160.1659364074. The cubic root of 1345985 is about 110.4112703347.

The spelling of 1345985 in words is "one million, three hundred forty-five thousand, nine hundred eighty-five".