361866 has 16 divisors (see below), whose sum is σ = 741888. Its totient is φ = 117600.

The previous prime is 361843. The next prime is 361871. The reversal of 361866 is 668163.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 361866.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490 + ... + 981.

It is an arithmetic number, because the mean of its divisors is an integer number (46368).

2³⁶¹⁸⁶⁶ is an apocalyptic number.

361866 is an abundant number, since it is smaller than the sum of its proper divisors (380022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

361866 is a wasteful number, since it uses less digits than its factorization.

361866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1517.

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

The square root of 361866 is about 601.5529901846. The cubic root of 361866 is about 71.2605647615.

It can be divided in two parts, 36 and 1866, that multiplied together give a palindrome (67176).

The spelling of 361866 in words is "three hundred sixty-one thousand, eight hundred sixty-six".