6646220014 has 16 divisors (see below), whose sum is σ = 11761053696. Its totient is φ = 2756496600.

The previous prime is 6646220011. The next prime is 6646220027. The reversal of 6646220014 is 4100226466.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6646220011) 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, 7656502 + ... + 7657369.

It is an arithmetic number, because the mean of its divisors is an integer number (735065856).

Almost surely, 2^6646220014 is an apocalyptic number.

6646220014 is a deficient number, since it is larger than the sum of its proper divisors (5114833682).

6646220014 is a wasteful number, since it uses less digits than its factorization.

6646220014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15313911.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 6646220014 is about 81524.3522758691. The cubic root of 6646220014 is about 1880.1459836466.

The spelling of 6646220014 in words is "six billion, six hundred forty-six million, two hundred twenty thousand, fourteen".