6611561006 has 32 divisors (see below), whose sum is σ = 10372827168. Its totient is φ = 3157453440.

The previous prime is 6611560999. The next prime is 6611561009. The reversal of 6611561006 is 6001651166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6611561009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2946521 + ... + 2948763.

It is an arithmetic number, because the mean of its divisors is an integer number (324150849).

Almost surely, 2^6611561006 is an apocalyptic number.

6611561006 is a deficient number, since it is larger than the sum of its proper divisors (3761266162).

6611561006 is a wasteful number, since it uses less digits than its factorization.

6611561006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2996.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 6611561006 is about 81311.5059877752. The cubic root of 6611561006 is about 1876.8720626687.

The spelling of 6611561006 in words is "six billion, six hundred eleven million, five hundred sixty-one thousand, six".