261006258 has 16 divisors (see below), whose sum is σ = 522707616. Its totient is φ = 86886240.

The previous prime is 261006257. The next prime is 261006269. The reversal of 261006258 is 852600162.

It is not an unprimeable number, because it can be changed into a prime (261006257) 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, 24016 + ... + 33147.

It is an arithmetic number, because the mean of its divisors is an integer number (32669226).

Almost surely, 2^261006258 is an apocalyptic number.

261006258 is an abundant number, since it is smaller than the sum of its proper divisors (261701358).

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

261006258 is a wasteful number, since it uses less digits than its factorization.

261006258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57929.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 261006258 is about 16155.6881004803. The cubic root of 261006258 is about 639.0727604433.

The spelling of 261006258 in words is "two hundred sixty-one million, six thousand, two hundred fifty-eight".