261060563 has 8 divisors (see below), whose sum is σ = 266335776. Its totient is φ = 255798400.

The previous prime is 261060529. The next prime is 261060587. The reversal of 261060563 is 365060162.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-261060563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261060593) 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, 43898 + ... + 49488.

It is an arithmetic number, because the mean of its divisors is an integer number (33291972).

Almost surely, 2^261060563 is an apocalyptic number.

261060563 is a deficient number, since it is larger than the sum of its proper divisors (5275213).

261060563 is an equidigital number, since it uses as much as digits as its factorization.

261060563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6525.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 261060563 is about 16157.3686904768. The cubic root of 261060563 is about 639.1170792269.

The spelling of 261060563 in words is "two hundred sixty-one million, sixty thousand, five hundred sixty-three".