369985 has 24 divisors (see below), whose sum is σ = 571968. Its totient is φ = 223200.

The previous prime is 369983. The next prime is 369991. The reversal of 369985 is 589963.

It is not a de Polignac number, because 369985 - 2¹ = 369983 is a prime.

It is a Duffinian number.

Its product of digits (58320) is a multiple of the sum of its prime divisors (54).

369985 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (369983) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11920 + ... + 11950.

It is an arithmetic number, because the mean of its divisors is an integer number (23832).

2³⁶⁹⁹⁸⁵ is an apocalyptic number.

369985 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

369985 is the 385-th heptagonal number.

It is an amenable number.

369985 is a deficient number, since it is larger than the sum of its proper divisors (201983).

369985 is a wasteful number, since it uses less digits than its factorization.

369985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85 (or 54 counting only the distinct ones).

The product of its digits is 58320, while the sum is 40.

The square root of 369985 is about 608.2639229808. The cubic root of 369985 is about 71.7895733651.

The spelling of 369985 in words is "three hundred sixty-nine thousand, nine hundred eighty-five".