361660 has 36 divisors (see below), whose sum is σ = 830088. Its totient is φ = 132288.

The previous prime is 361651. The next prime is 361663. The reversal of 361660 is 66163.

It is an Ulam number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3327 + ... + 3433.

It is an arithmetic number, because the mean of its divisors is an integer number (23058).

2³⁶¹⁶⁶⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 361660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (415044).

361660 is an abundant number, since it is smaller than the sum of its proper divisors (468428).

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

361660 is a wasteful number, since it uses less digits than its factorization.

361660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 361660 is about 601.3817423235. The cubic root of 361660 is about 71.2470399919.

The spelling of 361660 in words is "three hundred sixty-one thousand, six hundred sixty".