261714613 has 2 divisors, whose sum is σ = 261714614. Its totient is φ = 261714612.

The previous prime is 261714611. The next prime is 261714671. The reversal of 261714613 is 316417162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196056004 + 65658609 = 14002^2 + 8103^2 .

It is a cyclic number.

It is not a de Polignac number, because 261714613 - 2¹ = 261714611 is a prime.

Together with 261714611, it forms a pair of twin primes.

It is equal to p_14284480 and since 261714613 and 14284480 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (261714611) 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, 130857306 + 130857307.

It is an arithmetic number, because the mean of its divisors is an integer number (130857307).

Almost surely, 2^261714613 is an apocalyptic number.

It is an amenable number.

261714613 is a deficient number, since it is larger than the sum of its proper divisors (1).

261714613 is an equidigital number, since it uses as much as digits as its factorization.

261714613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 31.

The square root of 261714613 is about 16177.5960204228. The cubic root of 261714613 is about 639.6503730011.

The spelling of 261714613 in words is "two hundred sixty-one million, seven hundred fourteen thousand, six hundred thirteen".