6650197 has 4 divisors (see below), whose sum is σ = 6939360. Its totient is φ = 6361036.

The previous prime is 6650153. The next prime is 6650207. The reversal of 6650197 is 7910566.

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 a de Polignac number, because none of the positive numbers 2^k-6650197 is a prime.

It is a Duffinian number.

6650197 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6650297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144547 + ... + 144592.

It is an arithmetic number, because the mean of its divisors is an integer number (1734840).

Almost surely, 2^6650197 is an apocalyptic number.

It is an amenable number.

6650197 is a deficient number, since it is larger than the sum of its proper divisors (289163).

6650197 is a wasteful number, since it uses less digits than its factorization.

6650197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289162.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 6650197 is about 2578.7975880243. The cubic root of 6650197 is about 188.0520924756.

The spelling of 6650197 in words is "six million, six hundred fifty thousand, one hundred ninety-seven".