668574770 has 8 divisors (see below), whose sum is σ = 1203434604. Its totient is φ = 267429904.

The previous prime is 668574761. The next prime is 668574773. The reversal of 668574770 is 77475866.

668574770 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 2 ways, for example, as 643484689 + 25090081 = 25367^2 + 5009^2 .

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

It is not an unprimeable number, because it can be changed into a prime (668574773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33428729 + ... + 33428748.

Almost surely, 2^668574770 is an apocalyptic number.

668574770 is a deficient number, since it is larger than the sum of its proper divisors (534859834).

668574770 is a wasteful number, since it uses less digits than its factorization.

668574770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66857484.

The product of its (nonzero) digits is 1975680, while the sum is 50.

The square root of 668574770 is about 25856.8128353051. The cubic root of 668574770 is about 874.4131117509.

The spelling of 668574770 in words is "six hundred sixty-eight million, five hundred seventy-four thousand, seven hundred seventy".