668170354265 has 8 divisors (see below), whose sum is σ = 814948760328. Its totient is φ = 525773393280.

The previous prime is 668170354249. The next prime is 668170354277. The reversal of 668170354265 is 562453071866.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4747072201 + 663423282064 = 68899^2 + 814508^2 .

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

It is not a de Polignac number, because 668170354265 - 2⁴ = 668170354249 is a prime.

It is a Duffinian 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, 1095360932 + ... + 1095361541.

It is an arithmetic number, because the mean of its divisors is an integer number (101868595041).

Almost surely, 2^668170354265 is an apocalyptic number.

It is an amenable number.

668170354265 is a deficient number, since it is larger than the sum of its proper divisors (146778406063).

668170354265 is a wasteful number, since it uses less digits than its factorization.

668170354265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2190722539.

The product of its (nonzero) digits is 7257600, while the sum is 53.

The spelling of 668170354265 in words is "six hundred sixty-eight billion, one hundred seventy million, three hundred fifty-four thousand, two hundred sixty-five".