261692 has 6 divisors (see below), whose sum is σ = 457968. Its totient is φ = 130844.

The previous prime is 261673. The next prime is 261697. The reversal of 261692 is 296162.

It is a zygodrome in base 2.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 261692.

It is not an unprimeable number, because it can be changed into a prime (261697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32708 + ... + 32715.

It is an arithmetic number, because the mean of its divisors is an integer number (76328).

2²⁶¹⁶⁹² is an apocalyptic number.

It is an amenable number.

261692 is a deficient number, since it is larger than the sum of its proper divisors (196276).

261692 is a wasteful number, since it uses less digits than its factorization.

261692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65427 (or 65425 counting only the distinct ones).

The product of its digits is 1296, while the sum is 26.

The square root of 261692 is about 511.5584033129. The cubic root of 261692 is about 63.9631949841.

The spelling of 261692 in words is "two hundred sixty-one thousand, six hundred ninety-two".