6642349273 has 8 divisors (see below), whose sum is σ = 7629792192. Its totient is φ = 5664540336.

The previous prime is 6642349271. The next prime is 6642349291. The reversal of 6642349273 is 3729432466.

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

It is not a de Polignac number, because 6642349273 - 2¹ = 6642349271 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6642349271) 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, 2407015 + ... + 2409772.

It is an arithmetic number, because the mean of its divisors is an integer number (953724024).

Almost surely, 2^6642349273 is an apocalyptic number.

It is an amenable number.

6642349273 is a deficient number, since it is larger than the sum of its proper divisors (987442919).

6642349273 is a wasteful number, since it uses less digits than its factorization.

6642349273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4816991.

The product of its digits is 1306368, while the sum is 46.

The square root of 6642349273 is about 81500.6090345342. The cubic root of 6642349273 is about 1879.7809154125.

The spelling of 6642349273 in words is "six billion, six hundred forty-two million, three hundred forty-nine thousand, two hundred seventy-three".