5966615666 has 16 divisors (see below), whose sum is σ = 9766903968. Its totient is φ = 2711167200.

The previous prime is 5966615593. The next prime is 5966615687. The reversal of 5966615666 is 6665166695.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21206 + ... + 111278.

It is an arithmetic number, because the mean of its divisors is an integer number (610431498).

Almost surely, 2^5966615666 is an apocalyptic number.

5966615666 is a deficient number, since it is larger than the sum of its proper divisors (3800288302).

5966615666 is a wasteful number, since it uses less digits than its factorization.

5966615666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93097.

The product of its digits is 10497600, while the sum is 56.

The square root of 5966615666 is about 77243.8713814889. The cubic root of 5966615666 is about 1813.7441360926.

The spelling of 5966615666 in words is "five billion, nine hundred sixty-six million, six hundred fifteen thousand, six hundred sixty-six".