380669 has 4 divisors (see below), whose sum is σ = 384540. Its totient is φ = 376800.

The previous prime is 380657. The next prime is 380707. The reversal of 380669 is 966083.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 966083 = 41 ⋅23563.

It can be written as a sum of positive squares in 2 ways, for example, as 344569 + 36100 = 587^2 + 190^2 .

It is a cyclic number.

It is not a de Polignac number, because 380669 - 2¹² = 376573 is a prime.

It is a super-2 number, since 2×380669² = 289817775122, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1784 + ... + 1985.

It is an arithmetic number, because the mean of its divisors is an integer number (96135).

2³⁸⁰⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

380669 is a deficient number, since it is larger than the sum of its proper divisors (3871).

380669 is a wasteful number, since it uses less digits than its factorization.

380669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3870.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 380669 is about 616.9837923317. The cubic root of 380669 is about 72.4740454063.

The spelling of 380669 in words is "three hundred eighty thousand, six hundred sixty-nine".