6640070134 has 4 divisors (see below), whose sum is σ = 9960105204. Its totient is φ = 3320035066.

The previous prime is 6640070131. The next prime is 6640070147. The reversal of 6640070134 is 4310700466.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 6640070096 and 6640070105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6640070131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1660017532 + ... + 1660017535.

It is an arithmetic number, because the mean of its divisors is an integer number (2490026301).

Almost surely, 2^6640070134 is an apocalyptic number.

6640070134 is a deficient number, since it is larger than the sum of its proper divisors (3320035070).

6640070134 is a wasteful number, since it uses less digits than its factorization.

6640070134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3320035069.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 6640070134 is about 81486.6254915492. The cubic root of 6640070134 is about 1879.5658924879.

The spelling of 6640070134 in words is "six billion, six hundred forty million, seventy thousand, one hundred thirty-four".