1385623 has 4 divisors (see below), whose sum is σ = 1391008. Its totient is φ = 1380240.

The previous prime is 1385621. The next prime is 1385647. The reversal of 1385623 is 3265831.

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

It is a cyclic number.

It is not a de Polignac number, because 1385623 - 2¹ = 1385621 is a prime.

It is a Duffinian number.

1385623 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1385591 and 1385600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1385621) 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, 2286 + ... + 2827.

It is an arithmetic number, because the mean of its divisors is an integer number (347752).

2^1385623 is an apocalyptic number.

1385623 is a deficient number, since it is larger than the sum of its proper divisors (5385).

1385623 is an equidigital number, since it uses as much as digits as its factorization.

1385623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5384.

The product of its digits is 4320, while the sum is 28.

The square root of 1385623 is about 1177.1248871721. The cubic root of 1385623 is about 111.4846379662.

The spelling of 1385623 in words is "one million, three hundred eighty-five thousand, six hundred twenty-three".