261364269 has 16 divisors (see below), whose sum is σ = 364230720. Its totient is φ = 166494720.

The previous prime is 261364237. The next prime is 261364283. The reversal of 261364269 is 962463162.

261364269 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 261364269 - 2⁵ = 261364237 is a prime.

It is a super-2 number, since 2×261364269² = 136622562219808722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261364219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7047 + ... + 23924.

It is an arithmetic number, because the mean of its divisors is an integer number (22764420).

Almost surely, 2^261364269 is an apocalyptic number.

261364269 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

261364269 is a deficient number, since it is larger than the sum of its proper divisors (102866451).

261364269 is a wasteful number, since it uses less digits than its factorization.

261364269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31100.

The product of its digits is 93312, while the sum is 39.

The square root of 261364269 is about 16166.7643330383. The cubic root of 261364269 is about 639.3648231062.

The spelling of 261364269 in words is "two hundred sixty-one million, three hundred sixty-four thousand, two hundred sixty-nine".