261408703 has 2 divisors, whose sum is σ = 261408704. Its totient is φ = 261408702.

The previous prime is 261408701. The next prime is 261408713. The reversal of 261408703 is 307804162.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 261408703 - 2¹ = 261408701 is a prime.

Together with 261408701, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (261408701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130704351 + 130704352.

It is an arithmetic number, because the mean of its divisors is an integer number (130704352).

Almost surely, 2^261408703 is an apocalyptic number.

261408703 is a deficient number, since it is larger than the sum of its proper divisors (1).

261408703 is an equidigital number, since it uses as much as digits as its factorization.

261408703 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 261408703 is about 16168.1385137560. The cubic root of 261408703 is about 639.4010534178.

It can be divided in two parts, 26140 and 8703, that added together give a palindrome (34843).

The spelling of 261408703 in words is "two hundred sixty-one million, four hundred eight thousand, seven hundred three".