61365 has 8 divisors (see below), whose sum is σ = 98208. Its totient is φ = 32720.

The previous prime is 61363. The next prime is 61379. The reversal of 61365 is 56316.

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

It is not a de Polignac number, because 61365 - 2¹ = 61363 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61363) 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, 2031 + ... + 2060.

It is an arithmetic number, because the mean of its divisors is an integer number (12276).

2⁶¹³⁶⁵ is an apocalyptic number.

It is an amenable number.

61365 is a deficient number, since it is larger than the sum of its proper divisors (36843).

61365 is a wasteful number, since it uses less digits than its factorization.

61365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4099.

The product of its digits is 540, while the sum is 21.

The square root of 61365 is about 247.7195995476. The cubic root of 61365 is about 39.4433305834.

The spelling of 61365 in words is "sixty-one thousand, three hundred sixty-five".