1375685 has 8 divisors (see below), whose sum is σ = 1673880. Its totient is φ = 1085184.

The previous prime is 1375681. The next prime is 1375709. The reversal of 1375685 is 5865731.

It can be written as a sum of positive squares in 4 ways, for example, as 357604 + 1018081 = 598^2 + 1009^2 .

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 1375685 - 2² = 1375681 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1520 + ... + 2249.

It is an arithmetic number, because the mean of its divisors is an integer number (209235).

2^1375685 is an apocalyptic number.

It is an amenable number.

1375685 is a deficient number, since it is larger than the sum of its proper divisors (298195).

1375685 is an equidigital number, since it uses as much as digits as its factorization.

1375685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3847.

The product of its digits is 25200, while the sum is 35.

The square root of 1375685 is about 1172.8959885685. The cubic root of 1375685 is about 111.2174672370.

The spelling of 1375685 in words is "one million, three hundred seventy-five thousand, six hundred eighty-five".