1387065 has 16 divisors (see below), whose sum is σ = 2246400. Its totient is φ = 730752.

The previous prime is 1387039. The next prime is 1387069. The reversal of 1387065 is 5607831.

It is not a de Polignac number, because 1387065 - 2¹¹ = 1385017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1387069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 816 + ... + 1854.

It is an arithmetic number, because the mean of its divisors is an integer number (140400).

2^1387065 is an apocalyptic number.

1387065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1387065 is a deficient number, since it is larger than the sum of its proper divisors (859335).

1387065 is a wasteful number, since it uses less digits than its factorization.

1387065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 1387065 is about 1177.7372372478. The cubic root of 1387065 is about 111.5232981002.

It can be divided in two parts, 13 and 87065, that added together give a palindrome (87078).

The spelling of 1387065 in words is "one million, three hundred eighty-seven thousand, sixty-five".