261602 has 24 divisors (see below), whose sum is σ = 459648. Its totient is φ = 111320.

The previous prime is 261601. The next prime is 261619. The reversal of 261602 is 206162.

It is not an unprimeable number, because it can be changed into a prime (261601) 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 in 11 ways as a sum of consecutive naturals, for example, 5543 + ... + 5589.

It is an arithmetic number, because the mean of its divisors is an integer number (19152).

2²⁶¹⁶⁰² is an apocalyptic number.

261602 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

261602 is a deficient number, since it is larger than the sum of its proper divisors (198046).

261602 is a wasteful number, since it uses less digits than its factorization.

261602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 261602 is about 511.4704292528. The cubic root of 261602 is about 63.9558614933.

Adding to 261602 its reverse (206162), we get a palindrome (467764).

It can be divided in two parts, 26160 and 2, that added together give a palindrome (26162).

The spelling of 261602 in words is "two hundred sixty-one thousand, six hundred two".