378686 has 16 divisors (see below), whose sum is σ = 708480. Its totient is φ = 147480.

The previous prime is 378683. The next prime is 378691. The reversal of 378686 is 686873.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378683) 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, 1076 + ... + 1383.

It is an arithmetic number, because the mean of its divisors is an integer number (44280).

2³⁷⁸⁶⁸⁶ is an apocalyptic number.

378686 is a deficient number, since it is larger than the sum of its proper divisors (329794).

378686 is a wasteful number, since it uses less digits than its factorization.

378686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2479.

The product of its digits is 48384, while the sum is 38.

The square root of 378686 is about 615.3746826121. The cubic root of 378686 is about 72.3479811110.

The spelling of 378686 in words is "three hundred seventy-eight thousand, six hundred eighty-six".