6662026728 has 192 divisors, whose sum is σ = 22212403200. Its totient is φ = 1761851520.

The previous prime is 6662026727. The next prime is 6662026729. The reversal of 6662026728 is 8276202666.

It is an interprime number because it is at equal distance from previous prime (6662026727) and next prime (6662026729).

It is not an unprimeable number, because it can be changed into a prime (6662026727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 350083 + ... + 368621.

It is an arithmetic number, because the mean of its divisors is an integer number (115689600).

Almost surely, 2^6662026728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6662026728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11106201600).

6662026728 is an abundant number, since it is smaller than the sum of its proper divisors (15550376472).

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

6662026728 is a wasteful number, since it uses less digits than its factorization.

6662026728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18612 (or 18605 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The square root of 6662026728 is about 81621.2394417041. The cubic root of 6662026728 is about 1881.6353214792.

The spelling of 6662026728 in words is "six billion, six hundred sixty-two million, twenty-six thousand, seven hundred twenty-eight".