32861 has 4 divisors (see below), whose sum is σ = 34812. Its totient is φ = 30912.

The previous prime is 32843. The next prime is 32869. The reversal of 32861 is 16823.

32861 = 13² + 14² + ... + 46².

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24025 + 8836 = 155^2 + 94^2 .

It is a cyclic number.

It is not a de Polignac number, because 32861 - 2⁶ = 32797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32869) 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, 950 + ... + 983.

It is an arithmetic number, because the mean of its divisors is an integer number (8703).

2³²⁸⁶¹ is an apocalyptic number.

It is an amenable number.

32861 is a deficient number, since it is larger than the sum of its proper divisors (1951).

32861 is a wasteful number, since it uses less digits than its factorization.

32861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1950.

The product of its digits is 288, while the sum is 20.

The square root of 32861 is about 181.2760326132. The cubic root of 32861 is about 32.0302448425.

The spelling of 32861 in words is "thirty-two thousand, eight hundred sixty-one".