361765 has 4 divisors (see below), whose sum is σ = 434124. Its totient is φ = 289408.

The previous prime is 361763. The next prime is 361769. The reversal of 361765 is 567163.

361765 is nontrivially palindromic in base 4.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 567163 = 197 ⋅2879.

It can be written as a sum of positive squares in 2 ways, for example, as 263169 + 98596 = 513^2 + 314^2 .

It is a cyclic number.

It is not a de Polignac number, because 361765 - 2¹ = 361763 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361763) 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, 36172 + ... + 36181.

It is an arithmetic number, because the mean of its divisors is an integer number (108531).

2³⁶¹⁷⁶⁵ is an apocalyptic number.

It is an amenable number.

361765 is a deficient number, since it is larger than the sum of its proper divisors (72359).

361765 is an equidigital number, since it uses as much as digits as its factorization.

361765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72358.

The product of its digits is 3780, while the sum is 28.

The square root of 361765 is about 601.4690349469. The cubic root of 361765 is about 71.2539343267.

The spelling of 361765 in words is "three hundred sixty-one thousand, seven hundred sixty-five".