61305165 has 12 divisors (see below), whose sum is σ = 106262364. Its totient is φ = 32696064.

The previous prime is 61305149. The next prime is 61305169. The reversal of 61305165 is 56150316.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 25341156 + 35964009 = 5034^2 + 5997^2 .

It is not a de Polignac number, because 61305165 - 2⁴ = 61305149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61305169) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 681124 + ... + 681213.

It is an arithmetic number, because the mean of its divisors is an integer number (8855197).

Almost surely, 2^61305165 is an apocalyptic number.

It is an amenable number.

61305165 is a deficient number, since it is larger than the sum of its proper divisors (44957199).

61305165 is a wasteful number, since it uses less digits than its factorization.

61305165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1362348 (or 1362345 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 61305165 is about 7829.7614906203. The cubic root of 61305165 is about 394.3050644815.

The spelling of 61305165 in words is "sixty-one million, three hundred five thousand, one hundred sixty-five".