6684217290 has 96 divisors (see below), whose sum is σ = 18740030400. Its totient is φ = 1647440640.

The previous prime is 6684217247. The next prime is 6684217291. The reversal of 6684217290 is 927124866.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (6684217291) 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 47 ways as a sum of consecutive naturals, for example, 22441 + ... + 117779.

It is an arithmetic number, because the mean of its divisors is an integer number (195208650).

Almost surely, 2^6684217290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6684217290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9370015200).

6684217290 is an abundant number, since it is smaller than the sum of its proper divisors (12055813110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6684217290 is a wasteful number, since it uses less digits than its factorization.

6684217290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95412 (or 95409 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 6684217290 is about 81757.0626306988. The cubic root of 6684217290 is about 1883.7221874564.

The spelling of 6684217290 in words is "six billion, six hundred eighty-four million, two hundred seventeen thousand, two hundred ninety".