6653649 has 8 divisors (see below), whose sum is σ = 9060480. Its totient is φ = 4341296.

The previous prime is 6653641. The next prime is 6653653. The reversal of 6653649 is 9463566.

It is a happy number.

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

It is not a de Polignac number, because 6653649 - 2³ = 6653641 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6653641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23454 + ... + 23735.

It is an arithmetic number, because the mean of its divisors is an integer number (1132560).

Almost surely, 2^6653649 is an apocalyptic number.

It is an amenable number.

6653649 is a deficient number, since it is larger than the sum of its proper divisors (2406831).

6653649 is a wasteful number, since it uses less digits than its factorization.

6653649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47239.

The product of its digits is 116640, while the sum is 39.

The square root of 6653649 is about 2579.4668053689. The cubic root of 6653649 is about 188.0846250223.

The spelling of 6653649 in words is "six million, six hundred fifty-three thousand, six hundred forty-nine".