378566 has 16 divisors (see below), whose sum is σ = 602640. Its totient is φ = 178080.

The previous prime is 378559. The next prime is 378569. The reversal of 378566 is 665873.

It is a happy number.

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, 3485 + ... + 3591.

It is an arithmetic number, because the mean of its divisors is an integer number (37665).

2³⁷⁸⁵⁶⁶ is an apocalyptic number.

378566 is a deficient number, since it is larger than the sum of its proper divisors (224074).

378566 is a wasteful number, since it uses less digits than its factorization.

378566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199.

The product of its digits is 30240, while the sum is 35.

The square root of 378566 is about 615.2771733130. The cubic root of 378566 is about 72.3403383014.

The spelling of 378566 in words is "three hundred seventy-eight thousand, five hundred sixty-six".