261358 has 8 divisors (see below), whose sum is σ = 415152. Its totient is φ = 122976.

The previous prime is 261353. The next prime is 261379. The reversal of 261358 is 853162.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3810 + ... + 3877.

It is an arithmetic number, because the mean of its divisors is an integer number (51894).

2²⁶¹³⁵⁸ is an apocalyptic number.

261358 is a deficient number, since it is larger than the sum of its proper divisors (153794).

261358 is a wasteful number, since it uses less digits than its factorization.

261358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7706.

The product of its digits is 1440, while the sum is 25.

The square root of 261358 is about 511.2318456434. The cubic root of 261358 is about 63.9359711198.

The spelling of 261358 in words is "two hundred sixty-one thousand, three hundred fifty-eight".