6656283021 has 16 divisors (see below), whose sum is σ = 9151893504. Its totient is φ = 4300931184.

The previous prime is 6656283019. The next prime is 6656283041. The reversal of 6656283021 is 1203826566.

It is not a de Polignac number, because 6656283021 - 2¹ = 6656283019 is a prime.

It is a super-2 number, since 2×6656283021² = 88612207311305772882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6656283041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214641 + ... + 243686.

It is an arithmetic number, because the mean of its divisors is an integer number (571993344).

Almost surely, 2^6656283021 is an apocalyptic number.

It is an amenable number.

6656283021 is a deficient number, since it is larger than the sum of its proper divisors (2495610483).

6656283021 is a wasteful number, since it uses less digits than its factorization.

6656283021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458480.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 6656283021 is about 81586.0467298177. The cubic root of 6656283021 is about 1881.0944115413.

The spelling of 6656283021 in words is "six billion, six hundred fifty-six million, two hundred eighty-three thousand, twenty-one".