668755762 has 8 divisors (see below), whose sum is σ = 1024477056. Its totient is φ = 327263412.

The previous prime is 668755757. The next prime is 668755781. The reversal of 668755762 is 267557866.

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, 3557118 + ... + 3557305.

It is an arithmetic number, because the mean of its divisors is an integer number (128059632).

Almost surely, 2^668755762 is an apocalyptic number.

668755762 is a deficient number, since it is larger than the sum of its proper divisors (355721294).

668755762 is a wasteful number, since it uses less digits than its factorization.

668755762 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7114472.

The product of its digits is 4233600, while the sum is 52.

The square root of 668755762 is about 25860.3124884445. The cubic root of 668755762 is about 874.4920096822.

The spelling of 668755762 in words is "six hundred sixty-eight million, seven hundred fifty-five thousand, seven hundred sixty-two".