365961 has 8 divisors (see below), whose sum is σ = 491200. Its totient is φ = 242352.

The previous prime is 365941. The next prime is 365969. The reversal of 365961 is 169563.

It is a happy number.

365961 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 365961 - 2⁵ = 365929 is a prime.

It is a Duffinian number.

365961 is strictly pandigital in base 7.

It is a Curzon number.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (365969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291 + ... + 903.

It is an arithmetic number, because the mean of its divisors is an integer number (61400).

2³⁶⁵⁹⁶¹ is an apocalyptic number.

It is an amenable number.

365961 is a deficient number, since it is larger than the sum of its proper divisors (125239).

365961 is a wasteful number, since it uses less digits than its factorization.

365961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815.

The product of its digits is 4860, while the sum is 30.

The square root of 365961 is about 604.9471051257. The cubic root of 365961 is about 71.5283601451.

It can be divided in two parts, 365 and 961, that added together give a triangular number (1326 = T₅₁).

The spelling of 365961 in words is "three hundred sixty-five thousand, nine hundred sixty-one".