261095996 has 24 divisors (see below), whose sum is σ = 552910176. Its totient is φ = 105315840.

The previous prime is 261095993. The next prime is 261096001. The reversal of 261095996 is 699590162.

It is a super-2 number, since 2×261095996² = 136342238254464032, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 261095996.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261095993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273785 + ... + 274736.

It is an arithmetic number, because the mean of its divisors is an integer number (23037924).

Almost surely, 2^261095996 is an apocalyptic number.

It is an amenable number.

261095996 is an abundant number, since it is smaller than the sum of its proper divisors (291814180).

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

261095996 is a wasteful number, since it uses less digits than its factorization.

261095996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548549 (or 548547 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 47.

The square root of 261095996 is about 16158.4651498835. The cubic root of 261095996 is about 639.1459930937.

The spelling of 261095996 in words is "two hundred sixty-one million, ninety-five thousand, nine hundred ninety-six".