261325068 has 12 divisors (see below), whose sum is σ = 609758520. Its totient is φ = 87108352.

The previous prime is 261325049. The next prime is 261325073. The reversal of 261325068 is 860523162.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10888533 + ... + 10888556.

It is an arithmetic number, because the mean of its divisors is an integer number (50813210).

Almost surely, 2^261325068 is an apocalyptic number.

It is an amenable number.

261325068 is an abundant number, since it is smaller than the sum of its proper divisors (348433452).

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

261325068 is a wasteful number, since it uses less digits than its factorization.

261325068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21777096 (or 21777094 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 261325068 is about 16165.5518928368. The cubic root of 261325068 is about 639.3328562352.

The spelling of 261325068 in words is "two hundred sixty-one million, three hundred twenty-five thousand, sixty-eight".