261793 has 8 divisors (see below), whose sum is σ = 302400. Its totient is φ = 222000.

The previous prime is 261791. The next prime is 261799. The reversal of 261793 is 397162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 261793 - 2¹ = 261791 is a prime.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 918 + ... + 1168.

It is an arithmetic number, because the mean of its divisors is an integer number (37800).

2²⁶¹⁷⁹³ is an apocalyptic number.

It is an amenable number.

261793 is a deficient number, since it is larger than the sum of its proper divisors (40607).

261793 is a wasteful number, since it uses less digits than its factorization.

261793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407.

The product of its digits is 2268, while the sum is 28.

The square root of 261793 is about 511.6571117457. The cubic root of 261793 is about 63.9714227885.

The spelling of 261793 in words is "two hundred sixty-one thousand, seven hundred ninety-three".