668053785 has 32 divisors (see below), whose sum is σ = 1230527232. Its totient is φ = 303160320.

The previous prime is 668053703. The next prime is 668053787. The reversal of 668053785 is 587350866.

668053785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 668053785 - 2¹⁰ = 668052761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (668053787) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8836 + ... + 37605.

It is an arithmetic number, because the mean of its divisors is an integer number (38453976).

Almost surely, 2^668053785 is an apocalyptic number.

It is an amenable number.

668053785 is a deficient number, since it is larger than the sum of its proper divisors (562473447).

668053785 is a wasteful number, since it uses less digits than its factorization.

668053785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46593.

The product of its (nonzero) digits is 1209600, while the sum is 48.

The square root of 668053785 is about 25846.7364477607. The cubic root of 668053785 is about 874.1859247471.

The spelling of 668053785 in words is "six hundred sixty-eight million, fifty-three thousand, seven hundred eighty-five".