6653947 has 4 divisors (see below), whose sum is σ = 6672160. Its totient is φ = 6635736.

The previous prime is 6653939. The next prime is 6653957. The reversal of 6653947 is 7493566.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6653947 - 2³ = 6653939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6653917) 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, 8547 + ... + 9292.

It is an arithmetic number, because the mean of its divisors is an integer number (1668040).

Almost surely, 2^6653947 is an apocalyptic number.

6653947 is a deficient number, since it is larger than the sum of its proper divisors (18213).

6653947 is a wasteful number, since it uses less digits than its factorization.

6653947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18212.

The product of its digits is 136080, while the sum is 40.

The square root of 6653947 is about 2579.5245685979. The cubic root of 6653947 is about 188.0874329243.

The spelling of 6653947 in words is "six million, six hundred fifty-three thousand, nine hundred forty-seven".