6611600643 has 8 divisors (see below), whose sum is σ = 8824208400. Its totient is φ = 4403363328.

The previous prime is 6611600623. The next prime is 6611600647. The reversal of 6611600643 is 3460061166.

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

It is not a de Polignac number, because 6611600643 - 2¹² = 6611596547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6611600647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1089078 + ... + 1095131.

It is an arithmetic number, because the mean of its divisors is an integer number (1103026050).

Almost surely, 2^6611600643 is an apocalyptic number.

6611600643 is a deficient number, since it is larger than the sum of its proper divisors (2212607757).

6611600643 is a wasteful number, since it uses less digits than its factorization.

6611600643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2185221.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 6611600643 is about 81311.7497229029. The cubic root of 6611600643 is about 1876.8758133427.

The spelling of 6611600643 in words is "six billion, six hundred eleven million, six hundred thousand, six hundred forty-three".