6666626662 has 16 divisors (see below), whose sum is σ = 10349856000. Its totient is φ = 3216787840.

The previous prime is 6666626639. The next prime is 6666626671. The reversal of 6666626662 is 2666266666.

It is a super-2 number, since 2×6666626662² = 88887822100978524488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95214 + ... + 149662.

It is an arithmetic number, because the mean of its divisors is an integer number (646866000).

Almost surely, 2^6666626662 is an apocalyptic number.

6666626662 is a deficient number, since it is larger than the sum of its proper divisors (3683229338).

6666626662 is a wasteful number, since it uses less digits than its factorization.

6666626662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56591.

The product of its digits is 6718464, while the sum is 52.

The square root of 6666626662 is about 81649.4131148534. The cubic root of 6666626662 is about 1882.0682931713.

The spelling of 6666626662 in words is "six billion, six hundred sixty-six million, six hundred twenty-six thousand, six hundred sixty-two".