648197 has 8 divisors (see below), whose sum is σ = 714432. Its totient is φ = 588060.

The previous prime is 648191. The next prime is 648199. The reversal of 648197 is 791846.

It is not a de Polignac number, because 648197 - 2⁴ = 648181 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 (648191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1088 + ... + 1574.

It is an arithmetic number, because the mean of its divisors is an integer number (89304).

2⁶⁴⁸¹⁹⁷ is an apocalyptic number.

It is an amenable number.

648197 is a deficient number, since it is larger than the sum of its proper divisors (66235).

648197 is an equidigital number, since it uses as much as digits as its factorization.

648197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520 (or 498 counting only the distinct ones).

The product of its digits is 12096, while the sum is 35.

The square root of 648197 is about 805.1068252102. The cubic root of 648197 is about 86.5437425634.

The spelling of 648197 in words is "six hundred forty-eight thousand, one hundred ninety-seven".