1385617 has 4 divisors (see below), whose sum is σ = 1388016. Its totient is φ = 1383220.

The previous prime is 1385609. The next prime is 1385621. The reversal of 1385617 is 7165831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1385617 - 2³ = 1385609 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (1385647) 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, 258 + ... + 1684.

It is an arithmetic number, because the mean of its divisors is an integer number (347004).

2^1385617 is an apocalyptic number.

It is an amenable number.

1385617 is a deficient number, since it is larger than the sum of its proper divisors (2399).

1385617 is an equidigital number, since it uses as much as digits as its factorization.

1385617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2398.

The product of its digits is 5040, while the sum is 31.

The square root of 1385617 is about 1177.1223385868. The cubic root of 1385617 is about 111.4844770497.

It can be divided in two parts, 1385 and 617, that added together give a palindrome (2002).

The spelling of 1385617 in words is "one million, three hundred eighty-five thousand, six hundred seventeen".