1381679 has 8 divisors (see below), whose sum is σ = 1552992. Its totient is φ = 1219680.

The previous prime is 1381649. The next prime is 1381693. The reversal of 1381679 is 9761831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1381679 - 2¹⁶ = 1316143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2012 + ... + 2609.

It is an arithmetic number, because the mean of its divisors is an integer number (194124).

2^1381679 is an apocalyptic number.

1381679 is a deficient number, since it is larger than the sum of its proper divisors (171313).

1381679 is a wasteful number, since it uses less digits than its factorization.

1381679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4657.

The product of its digits is 9072, while the sum is 35.

The square root of 1381679 is about 1175.4484250702. The cubic root of 1381679 is about 111.3787618242.

The spelling of 1381679 in words is "one million, three hundred eighty-one thousand, six hundred seventy-nine".