668355085 has 8 divisors (see below), whose sum is σ = 849204216. Its totient is φ = 503232000.

The previous prime is 668355059. The next prime is 668355097. The reversal of 668355085 is 580553866.

668355085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 10381284 + 657973801 = 3222^2 + 25651^2 .

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

It is not a de Polignac number, because 668355085 - 2⁵ = 668355053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3931416 + ... + 3931585.

It is an arithmetic number, because the mean of its divisors is an integer number (106150527).

Almost surely, 2^668355085 is an apocalyptic number.

It is an amenable number.

668355085 is a deficient number, since it is larger than the sum of its proper divisors (180849131).

668355085 is a wasteful number, since it uses less digits than its factorization.

668355085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7863023.

The product of its (nonzero) digits is 864000, while the sum is 46.

The square root of 668355085 is about 25852.5643795736. The cubic root of 668355085 is about 874.3173276557.

The spelling of 668355085 in words is "six hundred sixty-eight million, three hundred fifty-five thousand, eighty-five".