890656066 has 8 divisors (see below), whose sum is σ = 1336477644. Its totient is φ = 445163520.

The previous prime is 890656057. The next prime is 890656087. The reversal of 890656066 is 660656098.

It can be written as a sum of positive squares in 2 ways, for example, as 839318841 + 51337225 = 28971^2 + 7165^2 .

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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75375 + ... + 86386.

Almost surely, 2^890656066 is an apocalyptic number.

890656066 is a deficient number, since it is larger than the sum of its proper divisors (445821578).

890656066 is a wasteful number, since it uses less digits than its factorization.

890656066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164516.

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 890656066 is about 29843.8614458652. The cubic root of 890656066 is about 962.1364693592.

The spelling of 890656066 in words is "eight hundred ninety million, six hundred fifty-six thousand, sixty-six".