6654643501 has 16 divisors (see below), whose sum is σ = 7298058240. Its totient is φ = 6017710320.

The previous prime is 6654643481. The next prime is 6654643507. The reversal of 6654643501 is 1053464566.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6654643501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6654643507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2657416 + ... + 2659918.

It is an arithmetic number, because the mean of its divisors is an integer number (456128640).

Almost surely, 2^6654643501 is an apocalyptic number.

It is an amenable number.

6654643501 is a deficient number, since it is larger than the sum of its proper divisors (643414739).

6654643501 is a wasteful number, since it uses less digits than its factorization.

6654643501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3696.

The product of its (nonzero) digits is 259200, while the sum is 40.

The square root of 6654643501 is about 81575.9983144552. The cubic root of 6654643501 is about 1880.9399537080.

The spelling of 6654643501 in words is "six billion, six hundred fifty-four million, six hundred forty-three thousand, five hundred one".