381697 has 2 divisors, whose sum is σ = 381698. Its totient is φ = 381696.

The previous prime is 381673. The next prime is 381707. The reversal of 381697 is 796183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 370881 + 10816 = 609^2 + 104^2 .

It is a cyclic number.

It is not a de Polignac number, because 381697 - 2⁷ = 381569 is a prime.

It is not a weakly prime, because it can be changed into another prime (381607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190848 + 190849.

It is an arithmetic number, because the mean of its divisors is an integer number (190849).

2³⁸¹⁶⁹⁷ is an apocalyptic number.

It is an amenable number.

381697 is a deficient number, since it is larger than the sum of its proper divisors (1).

381697 is an equidigital number, since it uses as much as digits as its factorization.

381697 is an evil number, because the sum of its binary digits is even.

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

The square root of 381697 is about 617.8163157444. The cubic root of 381697 is about 72.5392257016.

The spelling of 381697 in words is "three hundred eighty-one thousand, six hundred ninety-seven".