261862 has 8 divisors (see below), whose sum is σ = 394992. Its totient is φ = 130200.

The previous prime is 261847. The next prime is 261881. The reversal of 261862 is 268162.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412 + ... + 832.

It is an arithmetic number, because the mean of its divisors is an integer number (49374).

2²⁶¹⁸⁶² is an apocalyptic number.

261862 is a deficient number, since it is larger than the sum of its proper divisors (133130).

261862 is a wasteful number, since it uses less digits than its factorization.

261862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734.

The product of its digits is 1152, while the sum is 25.

The square root of 261862 is about 511.7245352726. The cubic root of 261862 is about 63.9770425472.

The spelling of 261862 in words is "two hundred sixty-one thousand, eight hundred sixty-two".