6700168643 has 16 divisors (see below), whose sum is σ = 7940674560. Its totient is φ = 5533513056.

The previous prime is 6700168637. The next prime is 6700168669. The reversal of 6700168643 is 3468610076.

It is a cyclic number.

It is not a de Polignac number, because 6700168643 - 2¹⁶ = 6700103107 is a prime.

It is a super-2 number, since 2×6700168643² = 89784519689280922898, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6700168643.

It is not an unprimeable number, because it can be changed into a prime (6700168243) 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, 98903 + ... + 152256.

It is an arithmetic number, because the mean of its divisors is an integer number (496292160).

Almost surely, 2^6700168643 is an apocalyptic number.

6700168643 is a deficient number, since it is larger than the sum of its proper divisors (1240505917).

6700168643 is a wasteful number, since it uses less digits than its factorization.

6700168643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251306.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 6700168643 is about 81854.5578633224. The cubic root of 6700168643 is about 1885.2194481219.

The spelling of 6700168643 in words is "six billion, seven hundred million, one hundred sixty-eight thousand, six hundred forty-three".