6606981 has 8 divisors (see below), whose sum is σ = 9788160. Its totient is φ = 4404636.

The previous prime is 6606973. The next prime is 6606991. The reversal of 6606981 is 1896066.

It is not a de Polignac number, because 6606981 - 2³ = 6606973 is a prime.

It is a super-2 number, since 2×6606981² = 87304395868722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6606991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122325 + ... + 122378.

It is an arithmetic number, because the mean of its divisors is an integer number (1223520).

Almost surely, 2^6606981 is an apocalyptic number.

It is an amenable number.

6606981 is a deficient number, since it is larger than the sum of its proper divisors (3181179).

6606981 is a wasteful number, since it uses less digits than its factorization.

6606981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244712 (or 244706 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 6606981 is about 2570.4048319282. The cubic root of 6606981 is about 187.6438575984.

Subtracting from 6606981 its reverse (1896066), we obtain a triangular number (4710915 = T₃₀₆₉).

The spelling of 6606981 in words is "six million, six hundred six thousand, nine hundred eighty-one".