654217 has 4 divisors (see below), whose sum is σ = 656656. Its totient is φ = 651780.

The previous prime is 654209. The next prime is 654221. The reversal of 654217 is 712456.

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 not a de Polignac number, because 654217 - 2³ = 654209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 654191 and 654200.

It is not an unprimeable number, because it can be changed into a prime (654257) 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, 759 + ... + 1372.

It is an arithmetic number, because the mean of its divisors is an integer number (164164).

2⁶⁵⁴²¹⁷ is an apocalyptic number.

It is an amenable number.

654217 is a deficient number, since it is larger than the sum of its proper divisors (2439).

654217 is a wasteful number, since it uses less digits than its factorization.

654217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2438.

The product of its digits is 1680, while the sum is 25.

The square root of 654217 is about 808.8368191422. The cubic root of 654217 is about 86.8108366347.

The spelling of 654217 in words is "six hundred fifty-four thousand, two hundred seventeen".