381716 has 6 divisors (see below), whose sum is σ = 668010. Its totient is φ = 190856.

The previous prime is 381713. The next prime is 381737. The reversal of 381716 is 617183.

It can be written as a sum of positive squares in only one way, i.e., 364816 + 16900 = 604^2 + 130^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47711 + ... + 47718.

It is an arithmetic number, because the mean of its divisors is an integer number (111335).

2³⁸¹⁷¹⁶ is an apocalyptic number.

It is an amenable number.

381716 is a deficient number, since it is larger than the sum of its proper divisors (286294).

381716 is a wasteful number, since it uses less digits than its factorization.

381716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95433 (or 95431 counting only the distinct ones).

The product of its digits is 1008, while the sum is 26.

The square root of 381716 is about 617.8316922917. The cubic root of 381716 is about 72.5404292936.

Adding to 381716 its reverse (617183), we get a palindrome (998899).

The spelling of 381716 in words is "three hundred eighty-one thousand, seven hundred sixteen".