6642273270 has 128 divisors (see below), whose sum is σ = 17683660800. Its totient is φ = 1589182848.

The previous prime is 6642273241. The next prime is 6642273271. The reversal of 6642273270 is 723722466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6642273271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1347871 + ... + 1352789.

It is an arithmetic number, because the mean of its divisors is an integer number (138153600).

Almost surely, 2^6642273270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6642273270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8841830400).

6642273270 is an abundant number, since it is smaller than the sum of its proper divisors (11041387530).

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

6642273270 is a wasteful number, since it uses less digits than its factorization.

6642273270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5074.

The product of its (nonzero) digits is 169344, while the sum is 39.

The square root of 6642273270 is about 81500.1427606112. The cubic root of 6642273270 is about 1879.7737457838.

The spelling of 6642273270 in words is "six billion, six hundred forty-two million, two hundred seventy-three thousand, two hundred seventy".