365945 has 4 divisors (see below), whose sum is σ = 439140. Its totient is φ = 292752.

The previous prime is 365941. The next prime is 365969. The reversal of 365945 is 549563.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 549563 = 7 ⋅78509.

It can be written as a sum of positive squares in 2 ways, for example, as 273529 + 92416 = 523^2 + 304^2 .

It is a cyclic number.

It is not a de Polignac number, because 365945 - 2² = 365941 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 365945.

It is not an unprimeable number, because it can be changed into a prime (365941) 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 in 3 ways as a sum of consecutive naturals, for example, 36590 + ... + 36599.

It is an arithmetic number, because the mean of its divisors is an integer number (109785).

2³⁶⁵⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

365945 is a deficient number, since it is larger than the sum of its proper divisors (73195).

365945 is an equidigital number, since it uses as much as digits as its factorization.

365945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73194.

The product of its digits is 16200, while the sum is 32.

The square root of 365945 is about 604.9338806845. The cubic root of 365945 is about 71.5273177112.

The spelling of 365945 in words is "three hundred sixty-five thousand, nine hundred forty-five".