261058783 has 8 divisors (see below), whose sum is σ = 285947280. Its totient is φ = 237229440.

The previous prime is 261058771. The next prime is 261058789. The reversal of 261058783 is 387850162.

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

It is a cyclic number.

It is not a de Polignac number, because 261058783 - 2¹³ = 261050591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261058789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264273 + ... + 265258.

It is an arithmetic number, because the mean of its divisors is an integer number (35743410).

Almost surely, 2^261058783 is an apocalyptic number.

261058783 is a deficient number, since it is larger than the sum of its proper divisors (24888497).

261058783 is a wasteful number, since it uses less digits than its factorization.

261058783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529577.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 261058783 is about 16157.3136071564. The cubic root of 261058783 is about 639.1156266508.

The spelling of 261058783 in words is "two hundred sixty-one million, fifty-eight thousand, seven hundred eighty-three".