6653951 has 4 divisors (see below), whose sum is σ = 6664512. Its totient is φ = 6643392.

The previous prime is 6653939. The next prime is 6653957. The reversal of 6653951 is 1593566.

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 6653951 - 2⁶ = 6653887 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 (6653957) 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, 4271 + ... + 5616.

It is an arithmetic number, because the mean of its divisors is an integer number (1666128).

Almost surely, 2^6653951 is an apocalyptic number.

6653951 is a deficient number, since it is larger than the sum of its proper divisors (10561).

6653951 is an equidigital number, since it uses as much as digits as its factorization.

6653951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10560.

The product of its digits is 24300, while the sum is 35.

The square root of 6653951 is about 2579.5253439344. The cubic root of 6653951 is about 188.0874706136.

The spelling of 6653951 in words is "six million, six hundred fifty-three thousand, nine hundred fifty-one".