261796 has 6 divisors (see below), whose sum is σ = 458150. Its totient is φ = 130896.

The previous prime is 261791. The next prime is 261799. The reversal of 261796 is 697162.

It can be written as a sum of positive squares in only one way, i.e., 236196 + 25600 = 486^2 + 160^2 .

It is a nialpdrome in base 4.

It is not an unprimeable number, because it can be changed into a prime (261791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32721 + ... + 32728.

2²⁶¹⁷⁹⁶ is an apocalyptic number.

It is an amenable number.

261796 is a deficient number, since it is larger than the sum of its proper divisors (196354).

261796 is a wasteful number, since it uses less digits than its factorization.

261796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65453 (or 65451 counting only the distinct ones).

The product of its digits is 4536, while the sum is 31.

The square root of 261796 is about 511.6600433882. The cubic root of 261796 is about 63.9716671464.

The spelling of 261796 in words is "two hundred sixty-one thousand, seven hundred ninety-six".