6653397 has 4 divisors (see below), whose sum is σ = 8871200. Its totient is φ = 4435596.

The previous prime is 6653389. The next prime is 6653399. The reversal of 6653397 is 7933566.

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 not a de Polignac number, because 6653397 - 2³ = 6653389 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6653399) 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, 1108897 + ... + 1108902.

It is an arithmetic number, because the mean of its divisors is an integer number (2217800).

Almost surely, 2^6653397 is an apocalyptic number.

It is an amenable number.

6653397 is a deficient number, since it is larger than the sum of its proper divisors (2217803).

6653397 is a wasteful number, since it uses less digits than its factorization.

6653397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2217802.

The product of its digits is 102060, while the sum is 39.

The square root of 6653397 is about 2579.4179576021. The cubic root of 6653397 is about 188.0822504895.

The spelling of 6653397 in words is "six million, six hundred fifty-three thousand, three hundred ninety-seven".