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260961 = 3372351
BaseRepresentation
bin111111101101100001
3111020222020
4333231201
531322321
65332053
72134551
oct775541
9436866
10260961
11169078
12107029
1391a1c
146b161
15524c6
hex3fb61

260961 has 8 divisors (see below), whose sum is σ = 357504. Its totient is φ = 169200.

The previous prime is 260959. The next prime is 260969. The reversal of 260961 is 169062.

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

It is not a de Polignac number, because 260961 - 21 = 260959 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a nialpdrome in base 8.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 260961.

It is not an unprimeable number, because it can be changed into a prime (260969) 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, 1065 + ... + 1286.

It is an arithmetic number, because the mean of its divisors is an integer number (44688).

2260961 is an apocalyptic number.

It is an amenable number.

260961 is a deficient number, since it is larger than the sum of its proper divisors (96543).

260961 is a wasteful number, since it uses less digits than its factorization.

260961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2391.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 260961 is about 510.8434202376. The cubic root of 260961 is about 63.9035820298.

It can be divided in two parts, 260 and 961, that added together give a palindrome (1221).

The spelling of 260961 in words is "two hundred sixty thousand, nine hundred sixty-one".

Divisors: 1 3 37 111 2351 7053 86987 260961