668906468098 has 16 divisors (see below), whose sum is σ = 1094817243744. Its totient is φ = 303980888160.

The previous prime is 668906468081. The next prime is 668906468101. The reversal of 668906468098 is 890864609866.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3273915 + ... + 3472222.

It is an arithmetic number, because the mean of its divisors is an integer number (68426077734).

Almost surely, 2^668906468098 is an apocalyptic number.

668906468098 is a deficient number, since it is larger than the sum of its proper divisors (425910775646).

668906468098 is a wasteful number, since it uses less digits than its factorization.

668906468098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6750657.

The product of its (nonzero) digits is 214990848, while the sum is 70.

The spelling of 668906468098 in words is "six hundred sixty-eight billion, nine hundred six million, four hundred sixty-eight thousand, ninety-eight".