261761334 has 16 divisors (see below), whose sum is σ = 540410880. Its totient is φ = 84439080.

The previous prime is 261761323. The next prime is 261761363. The reversal of 261761334 is 433167162.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 261761295 and 261761304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 703474 + ... + 703845.

It is an arithmetic number, because the mean of its divisors is an integer number (33775680).

Almost surely, 2^261761334 is an apocalyptic number.

261761334 is an abundant number, since it is smaller than the sum of its proper divisors (278649546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261761334 is a wasteful number, since it uses less digits than its factorization.

261761334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407355.

The product of its digits is 18144, while the sum is 33.

The square root of 261761334 is about 16179.0399591570. The cubic root of 261761334 is about 639.6884339594.

The spelling of 261761334 in words is "two hundred sixty-one million, seven hundred sixty-one thousand, three hundred thirty-four".