455691 has 4 divisors (see below), whose sum is σ = 607592. Its totient is φ = 303792.

The previous prime is 455687. The next prime is 455701. The reversal of 455691 is 196554.

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

It is not a de Polignac number, because 455691 - 2² = 455687 is a prime.

It is a D-number.

It is a Duffinian number.

455691 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (455681) 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, 75946 + ... + 75951.

It is an arithmetic number, because the mean of its divisors is an integer number (151898).

2⁴⁵⁵⁶⁹¹ is an apocalyptic number.

455691 is a deficient number, since it is larger than the sum of its proper divisors (151901).

455691 is a wasteful number, since it uses less digits than its factorization.

455691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151900.

The product of its digits is 5400, while the sum is 30.

The square root of 455691 is about 675.0488871186. The cubic root of 455691 is about 76.9526329244.

The spelling of 455691 in words is "four hundred fifty-five thousand, six hundred ninety-one".