654197 has 4 divisors (see below), whose sum is σ = 671916. Its totient is φ = 636480.

The previous prime is 654191. The next prime is 654209. The reversal of 654197 is 791456.

It is a happy number.

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 398161 + 256036 = 631^2 + 506^2 .

It is a cyclic number.

It is not a de Polignac number, because 654197 - 2⁸ = 653941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654191) 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, 8804 + ... + 8877.

It is an arithmetic number, because the mean of its divisors is an integer number (167979).

2⁶⁵⁴¹⁹⁷ is an apocalyptic number.

It is an amenable number.

654197 is a deficient number, since it is larger than the sum of its proper divisors (17719).

654197 is a wasteful number, since it uses less digits than its factorization.

654197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17718.

The product of its digits is 7560, while the sum is 32.

The square root of 654197 is about 808.8244556144. The cubic root of 654197 is about 86.8099519973.

The spelling of 654197 in words is "six hundred fifty-four thousand, one hundred ninety-seven".