261065103 has 32 divisors (see below), whose sum is σ = 381652992. Its totient is φ = 157776000.

The previous prime is 261065093. The next prime is 261065113. The reversal of 261065103 is 301560162.

It is an interprime number because it is at equal distance from previous prime (261065093) and next prime (261065113).

It is not a de Polignac number, because 261065103 - 2⁴ = 261065087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261065113) 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 in 31 ways as a sum of consecutive naturals, for example, 752176 + ... + 752522.

It is an arithmetic number, because the mean of its divisors is an integer number (11926656).

Almost surely, 2^261065103 is an apocalyptic number.

261065103 is a deficient number, since it is larger than the sum of its proper divisors (120587889).

261065103 is a wasteful number, since it uses less digits than its factorization.

261065103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 261065103 is about 16157.5091830393. The cubic root of 261065103 is about 639.1207840821.

The spelling of 261065103 in words is "two hundred sixty-one million, sixty-five thousand, one hundred three".