363985 has 4 divisors (see below), whose sum is σ = 436788. Its totient is φ = 291184.

The previous prime is 363977. The next prime is 363989. The reversal of 363985 is 589363.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 589363 = 109 ⋅5407.

It can be written as a sum of positive squares in 2 ways, for example, as 173889 + 190096 = 417^2 + 436^2 .

It is a cyclic number.

It is not a de Polignac number, because 363985 - 2³ = 363977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 363985.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (363989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36394 + ... + 36403.

It is an arithmetic number, because the mean of its divisors is an integer number (109197).

2³⁶³⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

363985 is a deficient number, since it is larger than the sum of its proper divisors (72803).

363985 is an equidigital number, since it uses as much as digits as its factorization.

363985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72802.

The product of its digits is 19440, while the sum is 34.

The square root of 363985 is about 603.3116939029. The cubic root of 363985 is about 71.3993890314.

The spelling of 363985 in words is "three hundred sixty-three thousand, nine hundred eighty-five".