381608 has 8 divisors (see below), whose sum is σ = 715530. Its totient is φ = 190800.

The previous prime is 381607. The next prime is 381629. The reversal of 381608 is 806183.

It can be written as a sum of positive squares in only one way, i.e., 334084 + 47524 = 578^2 + 218^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 381608.

It is not an unprimeable number, because it can be changed into a prime (381607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23843 + ... + 23858.

2³⁸¹⁶⁰⁸ is an apocalyptic number.

It is an amenable number.

381608 is a deficient number, since it is larger than the sum of its proper divisors (333922).

381608 is a wasteful number, since it uses less digits than its factorization.

381608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47707 (or 47703 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 381608 is about 617.7442836644. The cubic root of 381608 is about 72.5335872913.

It can be divided in two parts, 381 and 608, that added together give a palindrome (989).

The spelling of 381608 in words is "three hundred eighty-one thousand, six hundred eight".