6653791 has 4 divisors (see below), whose sum is σ = 6701800. Its totient is φ = 6605784.

The previous prime is 6653771. The next prime is 6653797. The reversal of 6653791 is 1973566.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6653791 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6653791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6653797) 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, 23796 + ... + 24073.

It is an arithmetic number, because the mean of its divisors is an integer number (1675450).

Almost surely, 2^6653791 is an apocalyptic number.

6653791 is a deficient number, since it is larger than the sum of its proper divisors (48009).

6653791 is a wasteful number, since it uses less digits than its factorization.

6653791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48008.

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

The square root of 6653791 is about 2579.4943302903. The cubic root of 6653791 is about 188.0859630263.

The spelling of 6653791 in words is "six million, six hundred fifty-three thousand, seven hundred ninety-one".