261064307 has 6 divisors (see below), whose sum is σ = 303687108. Its totient is φ = 223769364.

The previous prime is 261064289. The next prime is 261064337. The reversal of 261064307 is 703460162.

It is not a de Polignac number, because 261064307 - 2²⁴ = 244287091 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 261064307.

It is not an unprimeable number, because it can be changed into a prime (261064337) 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 5 ways as a sum of consecutive naturals, for example, 2663873 + ... + 2663970.

It is an arithmetic number, because the mean of its divisors is an integer number (50614518).

Almost surely, 2^261064307 is an apocalyptic number.

261064307 is a deficient number, since it is larger than the sum of its proper divisors (42622801).

261064307 is an equidigital number, since it uses as much as digits as its factorization.

261064307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5327857 (or 5327850 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 261064307 is about 16157.4845505109. The cubic root of 261064307 is about 639.1201345114.

The spelling of 261064307 in words is "two hundred sixty-one million, sixty-four thousand, three hundred seven".