6651270 has 48 divisors (see below), whose sum is σ = 17420832. Its totient is φ = 1760640.

The previous prime is 6651251. The next prime is 6651277. The reversal of 6651270 is 721566.

6651270 is a `hidden beast` number, since 6 + 651 + 2 + 7 + 0 = 666.

It is a super-2 number, since 2×6651270² = 88478785225800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6651277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23530 + ... + 23810.

It is an arithmetic number, because the mean of its divisors is an integer number (362934).

Almost surely, 2^6651270 is an apocalyptic number.

6651270 is an abundant number, since it is smaller than the sum of its proper divisors (10769562).

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

6651270 is a wasteful number, since it uses less digits than its factorization.

6651270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557 (or 554 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 6651270 is about 2579.0056223281. The cubic root of 6651270 is about 188.0622059125.

The spelling of 6651270 in words is "six million, six hundred fifty-one thousand, two hundred seventy".