261026627 has 2 divisors, whose sum is σ = 261026628. Its totient is φ = 261026626.

The previous prime is 261026621. The next prime is 261026639. The reversal of 261026627 is 726620162.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 261026627 - 2⁸ = 261026371 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 261026593 and 261026602.

It is not a weakly prime, because it can be changed into another prime (261026621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130513313 + 130513314.

It is an arithmetic number, because the mean of its divisors is an integer number (130513314).

Almost surely, 2^261026627 is an apocalyptic number.

261026627 is a deficient number, since it is larger than the sum of its proper divisors (1).

261026627 is an equidigital number, since it uses as much as digits as its factorization.

261026627 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 261026627 is about 16156.3184853481. The cubic root of 261026627 is about 639.0893844820.

Adding to 261026627 its reverse (726620162), we get a palindrome (987646789).

The spelling of 261026627 in words is "two hundred sixty-one million, twenty-six thousand, six hundred twenty-seven".