261761027 has 8 divisors (see below), whose sum is σ = 289820352. Its totient is φ = 234412200.

The previous prime is 261760987. The next prime is 261761029. The reversal of 261761027 is 720167162.

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

It is not a de Polignac number, because 261761027 - 2¹² = 261756931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 261760984 and 261761002.

It is not an unprimeable number, because it can be changed into a prime (261761029) 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, 176849 + ... + 178322.

It is an arithmetic number, because the mean of its divisors is an integer number (36227544).

Almost surely, 2^261761027 is an apocalyptic number.

261761027 is a deficient number, since it is larger than the sum of its proper divisors (28059325).

261761027 is a wasteful number, since it uses less digits than its factorization.

261761027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355249.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 261761027 is about 16179.0304715703. The cubic root of 261761027 is about 639.6881838786.

The spelling of 261761027 in words is "two hundred sixty-one million, seven hundred sixty-one thousand, twenty-seven".