378569 has 2 divisors, whose sum is σ = 378570. Its totient is φ = 378568.

The previous prime is 378559. The next prime is 378571. The reversal of 378569 is 965873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 366025 + 12544 = 605^2 + 112^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378569 is a prime.

It is a super-2 number, since 2×378569² = 286628975522, which contains 22 as substring.

Together with 378571, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (378509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189284 + 189285.

It is an arithmetic number, because the mean of its divisors is an integer number (189285).

2³⁷⁸⁵⁶⁹ is an apocalyptic number.

It is an amenable number.

378569 is a deficient number, since it is larger than the sum of its proper divisors (1).

378569 is an equidigital number, since it uses as much as digits as its factorization.

378569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 38.

The square root of 378569 is about 615.2796112338. The cubic root of 378569 is about 72.3405293914.

The spelling of 378569 in words is "three hundred seventy-eight thousand, five hundred sixty-nine".