6647646001 has 8 divisors (see below), whose sum is σ = 7008188544. Its totient is φ = 6293063040.

The previous prime is 6647645971. The next prime is 6647646013. The reversal of 6647646001 is 1006467466.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 6647646001 - 2⁵ = 6647645969 is a prime.

It is a super-2 number, since 2×6647646001² = 88382394709222584002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6647646041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1487605 + ... + 1492066.

It is an arithmetic number, because the mean of its divisors is an integer number (876023568).

Almost surely, 2^6647646001 is an apocalyptic number.

It is an amenable number.

6647646001 is a deficient number, since it is larger than the sum of its proper divisors (360542543).

6647646001 is a wasteful number, since it uses less digits than its factorization.

6647646001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2979791.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 6647646001 is about 81533.0975800625. The cubic root of 6647646001 is about 1880.2804396232.

The spelling of 6647646001 in words is "six billion, six hundred forty-seven million, six hundred forty-six thousand, one".