1381696 has 14 divisors (see below), whose sum is σ = 2741930. Its totient is φ = 690816.

The previous prime is 1381693. The next prime is 1381697. The reversal of 1381696 is 6961831.

It can be written as a sum of positive squares in only one way, i.e., 1166400 + 215296 = 1080^2 + 464^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381693) by changing a digit.

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, 10731 + ... + 10858.

2^1381696 is an apocalyptic number.

1381696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1381696 is a deficient number, since it is larger than the sum of its proper divisors (1360234).

1381696 is an equidigital number, since it uses as much as digits as its factorization.

1381696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21601 (or 21591 counting only the distinct ones).

The product of its digits is 7776, while the sum is 34.

The square root of 1381696 is about 1175.4556563308. The cubic root of 1381696 is about 111.3792186190.

The spelling of 1381696 in words is "one million, three hundred eighty-one thousand, six hundred ninety-six".