1385864 has 16 divisors (see below), whose sum is σ = 2624400. Its totient is φ = 686032.

The previous prime is 1385863. The next prime is 1385869. The reversal of 1385864 is 4685831.

It is not an unprimeable number, because it can be changed into a prime (1385861) 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, 47 + ... + 1665.

It is an arithmetic number, because the mean of its divisors is an integer number (164025).

2^1385864 is an apocalyptic number.

It is an amenable number.

1385864 is a deficient number, since it is larger than the sum of its proper divisors (1238536).

1385864 is a wasteful number, since it uses less digits than its factorization.

1385864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732 (or 1728 counting only the distinct ones).

The product of its digits is 23040, while the sum is 35.

The square root of 1385864 is about 1177.2272507889. The cubic root of 1385864 is about 111.4911010614.

The spelling of 1385864 in words is "one million, three hundred eighty-five thousand, eight hundred sixty-four".