380661 has 8 divisors (see below), whose sum is σ = 510720. Its totient is φ = 252192.

The previous prime is 380657. The next prime is 380707. The reversal of 380661 is 166083.

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

It is not a de Polignac number, because 380661 - 2² = 380657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385 + ... + 953.

It is an arithmetic number, because the mean of its divisors is an integer number (63840).

2³⁸⁰⁶⁶¹ is an apocalyptic number.

It is an amenable number.

380661 is a deficient number, since it is larger than the sum of its proper divisors (130059).

380661 is a wasteful number, since it uses less digits than its factorization.

380661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 380661 is about 616.9773091452. The cubic root of 380661 is about 72.4735377068.

The spelling of 380661 in words is "three hundred eighty thousand, six hundred sixty-one".