456689 has 4 divisors (see below), whose sum is σ = 458724. Its totient is φ = 454656.

The previous prime is 456683. The next prime is 456697. The reversal of 456689 is 986654.

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

It can be written as a sum of positive squares in 2 ways, for example, as 369664 + 87025 = 608^2 + 295^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-456689 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (456683) 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, 632 + ... + 1145.

It is an arithmetic number, because the mean of its divisors is an integer number (114681).

2⁴⁵⁶⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

456689 is a deficient number, since it is larger than the sum of its proper divisors (2035).

456689 is a wasteful number, since it uses less digits than its factorization.

456689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2034.

The product of its digits is 51840, while the sum is 38.

The square root of 456689 is about 675.7876885531. The cubic root of 456689 is about 77.0087694515.

The spelling of 456689 in words is "four hundred fifty-six thousand, six hundred eighty-nine".