378565 has 8 divisors (see below), whose sum is σ = 495648. Its totient is φ = 275280.

The previous prime is 378559. The next prime is 378569. The reversal of 378565 is 565873.

It is a happy number.

378565 is nontrivially palindromic in base 16.

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

It is not a de Polignac number, because 378565 - 2⁵ = 378533 is a prime.

It is a super-2 number, since 2×378565² = 286622918450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 378565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3387 + ... + 3496.

It is an arithmetic number, because the mean of its divisors is an integer number (61956).

2³⁷⁸⁵⁶⁵ is an apocalyptic number.

It is an amenable number.

378565 is a deficient number, since it is larger than the sum of its proper divisors (117083).

378565 is a wasteful number, since it uses less digits than its factorization.

378565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6899.

The product of its digits is 25200, while the sum is 34.

The square root of 378565 is about 615.2763606706. The cubic root of 378565 is about 72.3402746046.

The spelling of 378565 in words is "three hundred seventy-eight thousand, five hundred sixty-five".