261208268 has 6 divisors (see below), whose sum is σ = 457114476. Its totient is φ = 130604132.

The previous prime is 261208267. The next prime is 261208303. The reversal of 261208268 is 862802162.

261208268 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (261208267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32651030 + ... + 32651037.

It is an arithmetic number, because the mean of its divisors is an integer number (76185746).

Almost surely, 2^261208268 is an apocalyptic number.

It is an amenable number.

261208268 is a deficient number, since it is larger than the sum of its proper divisors (195906208).

261208268 is a wasteful number, since it uses less digits than its factorization.

261208268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65302071 (or 65302069 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 261208268 is about 16161.9388688363. The cubic root of 261208268 is about 639.2375914803.

The spelling of 261208268 in words is "two hundred sixty-one million, two hundred eight thousand, two hundred sixty-eight".