366861 has 8 divisors (see below), whose sum is σ = 533664. Its totient is φ = 222320.

The previous prime is 366859. The next prime is 366869. The reversal of 366861 is 168663.

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 366861 - 2¹ = 366859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (366869) 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, 5526 + ... + 5591.

It is an arithmetic number, because the mean of its divisors is an integer number (66708).

2³⁶⁶⁸⁶¹ is an apocalyptic number.

It is an amenable number.

366861 is a deficient number, since it is larger than the sum of its proper divisors (166803).

366861 is a wasteful number, since it uses less digits than its factorization.

366861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11131.

The product of its digits is 5184, while the sum is 30.

The square root of 366861 is about 605.6905150322. The cubic root of 366861 is about 71.5869481947.

The spelling of 366861 in words is "three hundred sixty-six thousand, eight hundred sixty-one".