130685 has 8 divisors (see below), whose sum is σ = 159840. Its totient is φ = 102544.
The previous prime is 130681. The next prime is 130687. The reversal of 130685 is 586031.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 130685 - 22 = 130681 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 130685.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (130681) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74 + ... + 516.
It is an arithmetic number, because the mean of its divisors is an integer number (19980).
2130685 is an apocalyptic number.
It is an amenable number.
130685 is a deficient number, since it is larger than the sum of its proper divisors (29155).
130685 is an equidigital number, since it uses as much as digits as its factorization.
130685 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 507.
The product of its (nonzero) digits is 720, while the sum is 23.
The square root of 130685 is about 361.5038035761. The cubic root of 130685 is about 50.7467905466.
The spelling of 130685 in words is "one hundred thirty thousand, six hundred eighty-five".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.068 sec. • engine limits •