1383688 has 16 divisors (see below), whose sum is σ = 2608380. Its totient is φ = 688128.

The previous prime is 1383667. The next prime is 1383691. The reversal of 1383688 is 8863831.

It can be written as a sum of positive squares in 2 ways, for example, as 1304164 + 79524 = 1142^2 + 282^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1720 + ... + 2392.

2^1383688 is an apocalyptic number.

It is an amenable number.

1383688 is a deficient number, since it is larger than the sum of its proper divisors (1224692).

1383688 is a wasteful number, since it uses less digits than its factorization.

1383688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936 (or 932 counting only the distinct ones).

The product of its digits is 27648, while the sum is 37.

The square root of 1383688 is about 1176.3026821359. The cubic root of 1383688 is about 111.4327182953.

It can be divided in two parts, 13836 and 88, that added together give a square (13924 = 118²).

The spelling of 1383688 in words is "one million, three hundred eighty-three thousand, six hundred eighty-eight".