6651966 has 16 divisors (see below), whose sum is σ = 13356288. Its totient is φ = 2208600.

The previous prime is 6651959. The next prime is 6652001. The reversal of 6651966 is 6691566.

It is a congruent number.

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, 420 + ... + 3671.

It is an arithmetic number, because the mean of its divisors is an integer number (834768).

Almost surely, 2^6651966 is an apocalyptic number.

6651966 is an abundant number, since it is smaller than the sum of its proper divisors (6704322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6651966 is a wasteful number, since it uses less digits than its factorization.

6651966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4367.

The product of its digits is 58320, while the sum is 39.

The square root of 6651966 is about 2579.1405545259. The cubic root of 6651966 is about 188.0687653982.

The spelling of 6651966 in words is "six million, six hundred fifty-one thousand, nine hundred sixty-six".