379681 has 2 divisors, whose sum is σ = 379682. Its totient is φ = 379680.

The previous prime is 379679. The next prime is 379693. The reversal of 379681 is 186973.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 379456 + 225 = 616^2 + 15^2 .

It is a cyclic number.

It is not a de Polignac number, because 379681 - 2¹ = 379679 is a prime.

It is a super-2 number, since 2×379681² = 288315323522, which contains 22 as substring.

Together with 379679, it forms a pair of twin primes.

379681 is a lucky number.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (379081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189840 + 189841.

It is an arithmetic number, because the mean of its divisors is an integer number (189841).

2³⁷⁹⁶⁸¹ is an apocalyptic number.

It is an amenable number.

379681 is a deficient number, since it is larger than the sum of its proper divisors (1).

379681 is an equidigital number, since it uses as much as digits as its factorization.

379681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 34.

The square root of 379681 is about 616.1826028054. The cubic root of 379681 is about 72.4112906295.

The spelling of 379681 in words is "three hundred seventy-nine thousand, six hundred eighty-one".