6550397 has 4 divisors (see below), whose sum is σ = 7486176. Its totient is φ = 5614620.

The previous prime is 6550367. The next prime is 6550403. The reversal of 6550397 is 7930556.

6550397 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 6550397 - 2¹⁴ = 6534013 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 (6550337) 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, 467879 + ... + 467892.

It is an arithmetic number, because the mean of its divisors is an integer number (1871544).

Almost surely, 2^6550397 is an apocalyptic number.

It is an amenable number.

6550397 is a deficient number, since it is larger than the sum of its proper divisors (935779).

6550397 is an equidigital number, since it uses as much as digits as its factorization.

6550397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935778.

The product of its (nonzero) digits is 28350, while the sum is 35.

The square root of 6550397 is about 2559.3743376068. The cubic root of 6550397 is about 187.1066432046.

The spelling of 6550397 in words is "six million, five hundred fifty thousand, three hundred ninety-seven".