261006244 has 12 divisors (see below), whose sum is σ = 463018444. Its totient is φ = 128715264.

The previous prime is 261006217. The next prime is 261006247. The reversal of 261006244 is 442600162.

It can be written as a sum of positive squares in 2 ways, for example, as 122943744 + 138062500 = 11088^2 + 11750^2 .

It is not an unprimeable number, because it can be changed into a prime (261006247) 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, 446637 + ... + 447220.

Almost surely, 2^261006244 is an apocalyptic number.

It is an amenable number.

261006244 is a deficient number, since it is larger than the sum of its proper divisors (202012200).

261006244 is a wasteful number, since it uses less digits than its factorization.

261006244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893934 (or 893932 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 261006244 is about 16155.6876671963. The cubic root of 261006244 is about 639.0727490169.

The spelling of 261006244 in words is "two hundred sixty-one million, six thousand, two hundred forty-four".