361860 has 48 divisors (see below), whose sum is σ = 1046976. Its totient is φ = 93312.

The previous prime is 361843. The next prime is 361871. The reversal of 361860 is 68163.

It is a self number, because there is not a number n which added to its sum of digits gives 361860.

It is a congruent number.

It is an unprimeable number.

361860 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2139 + ... + 2301.

It is an arithmetic number, because the mean of its divisors is an integer number (21812).

2³⁶¹⁸⁶⁰ is an apocalyptic number.

361860 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 361860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (523488).

361860 is an abundant number, since it is smaller than the sum of its proper divisors (685116).

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

361860 is a wasteful number, since it uses less digits than its factorization.

361860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 361860 is about 601.5480030721. The cubic root of 361860 is about 71.2601709088.

It can be divided in two parts, 361 and 860, that added together give a palindrome (1221).

The spelling of 361860 in words is "three hundred sixty-one thousand, eight hundred sixty".