6642015434 has 8 divisors (see below), whose sum is σ = 9966703620. Its totient is φ = 3319780896.

The previous prime is 6642015433. The next prime is 6642015437. The reversal of 6642015434 is 4345102466.

6642015434 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 6529124809 + 112890625 = 80803^2 + 10625^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 6642015394 and 6642015403.

It is not an unprimeable number, because it can be changed into a prime (6642015431) 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 3 ways as a sum of consecutive naturals, for example, 606629 + ... + 617480.

Almost surely, 2^6642015434 is an apocalyptic number.

6642015434 is a deficient number, since it is larger than the sum of its proper divisors (3324688186).

6642015434 is a wasteful number, since it uses less digits than its factorization.

6642015434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226824.

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 6642015434 is about 81498.5609320803. The cubic root of 6642015434 is about 1879.7494228050.

The spelling of 6642015434 in words is "six billion, six hundred forty-two million, fifteen thousand, four hundred thirty-four".