378667 has 2 divisors, whose sum is σ = 378668. Its totient is φ = 378666.

The previous prime is 378661. The next prime is 378671. The reversal of 378667 is 766873.

It is a strong prime.

It is an emirp because it is prime and its reverse (766873) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378667 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (378661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189333 + 189334.

It is an arithmetic number, because the mean of its divisors is an integer number (189334).

2³⁷⁸⁶⁶⁷ is an apocalyptic number.

378667 is a deficient number, since it is larger than the sum of its proper divisors (1).

378667 is an equidigital number, since it uses as much as digits as its factorization.

378667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 37.

The square root of 378667 is about 615.3592446693. The cubic root of 378667 is about 72.3467711071.

It can be divided in two parts, 37866 and 7, that added together give a palindrome (37873).

The spelling of 378667 in words is "three hundred seventy-eight thousand, six hundred sixty-seven".