667244770 has 8 divisors (see below), whose sum is σ = 1201040604. Its totient is φ = 266897904.

The previous prime is 667244737. The next prime is 667244771. The reversal of 667244770 is 77442766.

667244770 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 665588401 + 1656369 = 25799^2 + 1287^2 .

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 (667244771) 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, 33362229 + ... + 33362248.

Almost surely, 2^667244770 is an apocalyptic number.

667244770 is a deficient number, since it is larger than the sum of its proper divisors (533795834).

667244770 is a wasteful number, since it uses less digits than its factorization.

667244770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66724484.

The product of its (nonzero) digits is 395136, while the sum is 43.

The square root of 667244770 is about 25831.0814717464. The cubic root of 667244770 is about 873.8329016723.

The spelling of 667244770 in words is "six hundred sixty-seven million, two hundred forty-four thousand, seven hundred seventy".