6628866890 has 8 divisors (see below), whose sum is σ = 11931960420. Its totient is φ = 2651546752.

The previous prime is 6628866883. The next prime is 6628866919. The reversal of 6628866890 is 986688266.

It can be written as a sum of positive squares in 2 ways, for example, as 6628076569 + 790321 = 81413^2 + 889^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 331443335 + ... + 331443354.

Almost surely, 2^6628866890 is an apocalyptic number.

6628866890 is a deficient number, since it is larger than the sum of its proper divisors (5303093530).

6628866890 is a wasteful number, since it uses less digits than its factorization.

6628866890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662886696.

The product of its (nonzero) digits is 11943936, while the sum is 59.

The square root of 6628866890 is about 81417.8536317434. The cubic root of 6628866890 is about 1878.5082184619.

The spelling of 6628866890 in words is "six billion, six hundred twenty-eight million, eight hundred sixty-six thousand, eight hundred ninety".