6690943063 has 16 divisors (see below), whose sum is σ = 8106809344. Its totient is φ = 5400082080.

The previous prime is 6690943013. The next prime is 6690943099. The reversal of 6690943063 is 3603490966.

It is a cyclic number.

It is not a de Polignac number, because 6690943063 - 2⁹ = 6690942551 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 (6690943003) 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, 408645 + ... + 424702.

It is an arithmetic number, because the mean of its divisors is an integer number (506675584).

Almost surely, 2^6690943063 is an apocalyptic number.

6690943063 is a deficient number, since it is larger than the sum of its proper divisors (1415866281).

6690943063 is a wasteful number, since it uses less digits than its factorization.

6690943063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833422.

The product of its (nonzero) digits is 629856, while the sum is 46.

The square root of 6690943063 is about 81798.1849615259. The cubic root of 6690943063 is about 1884.3537867514.

The spelling of 6690943063 in words is "six billion, six hundred ninety million, nine hundred forty-three thousand, sixty-three".