130665 has 16 divisors (see below), whose sum is σ = 216576. Its totient is φ = 67200.

The previous prime is 130657. The next prime is 130681. The reversal of 130665 is 566031.

130665 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 130665 - 2³ = 130657 is a prime.

130665 is strictly pandigital in base 7.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 325 + ... + 605.

It is an arithmetic number, because the mean of its divisors is an integer number (13536).

2¹³⁰⁶⁶⁵ is an apocalyptic number.

130665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

130665 is a deficient number, since it is larger than the sum of its proper divisors (85911).

130665 is a wasteful number, since it uses less digits than its factorization.

130665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 130665 is about 361.4761402914. The cubic root of 130665 is about 50.7442016558.

Adding to 130665 its reverse (566031), we get a palindrome (696696).

The spelling of 130665 in words is "one hundred thirty thousand, six hundred sixty-five".