6654681 has 12 divisors (see below), whose sum is σ = 10486320. Its totient is φ = 4033080.

The previous prime is 6654679. The next prime is 6654737. The reversal of 6654681 is 1864566.

It is not a de Polignac number, because 6654681 - 2¹ = 6654679 is a prime.

It is a super-2 number, since 2×6654681² = 88569558423522, which contains 22 as substring.

It is a Curzon number.

6654681 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6654281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33511 + ... + 33708.

It is an arithmetic number, because the mean of its divisors is an integer number (873860).

Almost surely, 2^6654681 is an apocalyptic number.

It is an amenable number.

6654681 is a deficient number, since it is larger than the sum of its proper divisors (3831639).

6654681 is a wasteful number, since it uses less digits than its factorization.

6654681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67236 (or 67233 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 6654681 is about 2579.6668389542. Note that the first 3 decimals coincide. The cubic root of 6654681 is about 188.0943486741.

The spelling of 6654681 in words is "six million, six hundred fifty-four thousand, six hundred eighty-one".