6640336967 has 8 divisors (see below), whose sum is σ = 7257861120. Its totient is φ = 6025122360.

The previous prime is 6640336943. The next prime is 6640337027. The reversal of 6640336967 is 7696330466.

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

It is a cyclic number.

It is not a de Polignac number, because 6640336967 - 2⁸ = 6640336711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6640336907) 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, 571367 + ... + 582872.

It is an arithmetic number, because the mean of its divisors is an integer number (907232640).

Almost surely, 2^6640336967 is an apocalyptic number.

6640336967 is a deficient number, since it is larger than the sum of its proper divisors (617524153).

6640336967 is a wasteful number, since it uses less digits than its factorization.

6640336967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154773.

The product of its (nonzero) digits is 2939328, while the sum is 50.

The square root of 6640336967 is about 81488.2627560559. The cubic root of 6640336967 is about 1879.5910691039.

The spelling of 6640336967 in words is "six billion, six hundred forty million, three hundred thirty-six thousand, nine hundred sixty-seven".