481691 has 4 divisors (see below), whose sum is σ = 550512. Its totient is φ = 412872.

The previous prime is 481681. The next prime is 481693. The reversal of 481691 is 196184.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 481691 - 2¹⁸ = 219547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (481693) 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, 34400 + ... + 34413.

It is an arithmetic number, because the mean of its divisors is an integer number (137628).

2⁴⁸¹⁶⁹¹ is an apocalyptic number.

481691 is a deficient number, since it is larger than the sum of its proper divisors (68821).

481691 is an equidigital number, since it uses as much as digits as its factorization.

481691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68820.

The product of its digits is 1728, while the sum is 29.

The square root of 481691 is about 694.0396242290. The cubic root of 481691 is about 78.3891900791.

The spelling of 481691 in words is "four hundred eighty-one thousand, six hundred ninety-one".