369861 has 16 divisors (see below), whose sum is σ = 526848. Its totient is φ = 230400.

The previous prime is 369851. The next prime is 369877. The reversal of 369861 is 168963.

It is not a de Polignac number, because 369861 - 2⁵ = 369829 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (369821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3765 + ... + 3861.

It is an arithmetic number, because the mean of its divisors is an integer number (32928).

2³⁶⁹⁸⁶¹ is an apocalyptic number.

369861 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

369861 is a deficient number, since it is larger than the sum of its proper divisors (156987).

369861 is a wasteful number, since it uses less digits than its factorization.

369861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172.

The product of its digits is 7776, while the sum is 33.

The square root of 369861 is about 608.1619850007. The cubic root of 369861 is about 71.7815524077.

The spelling of 369861 in words is "three hundred sixty-nine thousand, eight hundred sixty-one".