6626666 has 16 divisors (see below), whose sum is σ = 10257408. Its totient is φ = 3208800.

The previous prime is 6626657. The next prime is 6626677. The reversal of 6626666 is 6666266.

6626666 is a modest number, since divided by 6666 gives 662 as remainder.

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, 17111 + ... + 17493.

It is an arithmetic number, because the mean of its divisors is an integer number (641088).

Almost surely, 2^6626666 is an apocalyptic number.

6626666 is a deficient number, since it is larger than the sum of its proper divisors (3630742).

6626666 is a wasteful number, since it uses less digits than its factorization.

6626666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637.

The product of its digits is 93312, while the sum is 38.

The square root of 6626666 is about 2574.2311473525. The cubic root of 6626666 is about 187.8300297175.

The spelling of 6626666 in words is "six million, six hundred twenty-six thousand, six hundred sixty-six".