6642697323 has 16 divisors (see below), whose sum is σ = 8923343616. Its totient is φ = 4395309600.

The previous prime is 6642697301. The next prime is 6642697333. The reversal of 6642697323 is 3237962466.

It is a happy number.

It is not a de Polignac number, because 6642697323 - 2⁵ = 6642697291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6642697333) 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 15 ways as a sum of consecutive naturals, for example, 572740 + ... + 584222.

It is an arithmetic number, because the mean of its divisors is an integer number (557708976).

Almost surely, 2^6642697323 is an apocalyptic number.

6642697323 is a deficient number, since it is larger than the sum of its proper divisors (2280646293).

6642697323 is a wasteful number, since it uses less digits than its factorization.

6642697323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12914.

The product of its digits is 1959552, while the sum is 48.

The square root of 6642697323 is about 81502.7442666810. The cubic root of 6642697323 is about 1879.8137474871.

The spelling of 6642697323 in words is "six billion, six hundred forty-two million, six hundred ninety-seven thousand, three hundred twenty-three".