654617 has 4 divisors (see below), whose sum is σ = 677220. Its totient is φ = 632016.

The previous prime is 654613. The next prime is 654623. The reversal of 654617 is 716456.

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 163216 + 491401 = 404^2 + 701^2 .

It is a cyclic number.

It is not a de Polignac number, because 654617 - 2² = 654613 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 22573 = 654617 / (6 + 5 + 4 + 6 + 1 + 7).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 654617.

It is not an unprimeable number, because it can be changed into a prime (654611) 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, 11258 + ... + 11315.

It is an arithmetic number, because the mean of its divisors is an integer number (169305).

2⁶⁵⁴⁶¹⁷ is an apocalyptic number.

It is an amenable number.

654617 is a deficient number, since it is larger than the sum of its proper divisors (22603).

654617 is a wasteful number, since it uses less digits than its factorization.

654617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22602.

The product of its digits is 5040, while the sum is 29.

The square root of 654617 is about 809.0840500220. The cubic root of 654617 is about 86.8285255972.

The spelling of 654617 in words is "six hundred fifty-four thousand, six hundred seventeen".