485681 has 4 divisors (see below), whose sum is σ = 555072. Its totient is φ = 416292.

The previous prime is 485671. The next prime is 485689. The reversal of 485681 is 186584.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-485681 is a prime.

It is a super-2 number, since 2×485681² = 471772067522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (485689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34685 + ... + 34698.

It is an arithmetic number, because the mean of its divisors is an integer number (138768).

2⁴⁸⁵⁶⁸¹ is an apocalyptic number.

It is an amenable number.

485681 is a deficient number, since it is larger than the sum of its proper divisors (69391).

485681 is an equidigital number, since it uses as much as digits as its factorization.

485681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69390.

The product of its digits is 7680, while the sum is 32.

The square root of 485681 is about 696.9081718562. The cubic root of 485681 is about 78.6050360755.

The spelling of 485681 in words is "four hundred eighty-five thousand, six hundred eighty-one".