6653971 has 8 divisors (see below), whose sum is σ = 7110080. Its totient is φ = 6208488.

The previous prime is 6653957. The next prime is 6653989. The reversal of 6653971 is 1793566.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6653971 - 2⁵ = 6653939 is a prime.

It is a Duffinian number.

6653971 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6653971.

It is not an unprimeable number, because it can be changed into a prime (6653921) 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, 1341 + ... + 3886.

It is an arithmetic number, because the mean of its divisors is an integer number (888760).

Almost surely, 2^6653971 is an apocalyptic number.

6653971 is a deficient number, since it is larger than the sum of its proper divisors (456109).

6653971 is a wasteful number, since it uses less digits than its factorization.

6653971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5313.

The product of its digits is 34020, while the sum is 37.

The square root of 6653971 is about 2579.5292206137. The cubic root of 6653971 is about 188.0876590604.

The spelling of 6653971 in words is "six million, six hundred fifty-three thousand, nine hundred seventy-one".