261065792 has 42 divisors (see below), whose sum is σ = 560991258. Its totient is φ = 120486912.

The previous prime is 261065789. The next prime is 261065803. The reversal of 261065792 is 297560162.

It is a happy number.

261065792 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 3013696 + 258052096 = 1736^2 + 16064^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1253 + ... + 22884.

Almost surely, 2^261065792 is an apocalyptic number.

It is an amenable number.

261065792 is an abundant number, since it is smaller than the sum of its proper divisors (299925466).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261065792 is a wasteful number, since it uses less digits than its factorization.

261065792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24175 (or 24152 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 261065792 is about 16157.5305043809. The cubic root of 261065792 is about 639.1213463350.

The spelling of 261065792 in words is "two hundred sixty-one million, sixty-five thousand, seven hundred ninety-two".