381767 has 8 divisors (see below), whose sum is σ = 408960. Its totient is φ = 355320.

The previous prime is 381761. The next prime is 381791. The reversal of 381767 is 767183.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381761) 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, 1208 + ... + 1490.

It is an arithmetic number, because the mean of its divisors is an integer number (51120).

2³⁸¹⁷⁶⁷ is an apocalyptic number.

381767 is a deficient number, since it is larger than the sum of its proper divisors (27193).

381767 is a wasteful number, since it uses less digits than its factorization.

381767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373.

The product of its digits is 7056, while the sum is 32.

The square root of 381767 is about 617.8729642896. The cubic root of 381767 is about 72.5436597906.

It can be divided in two parts, 38176 and 7, that added together give a palindrome (38183).

The spelling of 381767 in words is "three hundred eighty-one thousand, seven hundred sixty-seven".