1381568 has 14 divisors (see below), whose sum is σ = 2741676. Its totient is φ = 690752.

The previous prime is 1381559. The next prime is 1381609. The reversal of 1381568 is 8651831.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10730 + ... + 10857.

It is an arithmetic number, because the mean of its divisors is an integer number (195834).

2^1381568 is an apocalyptic number.

It is an amenable number.

1381568 is a deficient number, since it is larger than the sum of its proper divisors (1360108).

1381568 is an equidigital number, since it uses as much as digits as its factorization.

1381568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21599 (or 21589 counting only the distinct ones).

The product of its digits is 5760, while the sum is 32.

The square root of 1381568 is about 1175.4012080987. The cubic root of 1381568 is about 111.3757791311.

The spelling of 1381568 in words is "one million, three hundred eighty-one thousand, five hundred sixty-eight".