6656190 has 16 divisors (see below), whose sum is σ = 15974928. Its totient is φ = 1774976.

The previous prime is 6656183. The next prime is 6656201. The reversal of 6656190 is 916566.

It is a super-2 number, since 2×6656190² = 88609730632200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 110907 + ... + 110966.

It is an arithmetic number, because the mean of its divisors is an integer number (998433).

Almost surely, 2^6656190 is an apocalyptic number.

6656190 is an abundant number, since it is smaller than the sum of its proper divisors (9318738).

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

6656190 is a wasteful number, since it uses less digits than its factorization.

6656190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221883.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 6656190 is about 2579.9593020046. The cubic root of 6656190 is about 188.1085648788.

The spelling of 6656190 in words is "six million, six hundred fifty-six thousand, one hundred ninety".