667020338 has 4 divisors (see below), whose sum is σ = 1000530510. Its totient is φ = 333510168.

The previous prime is 667020331. The next prime is 667020353. The reversal of 667020338 is 833020766.

667020338 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 629357569 + 37662769 = 25087^2 + 6137^2 .

It is a super-2 number, since 2×667020338² = 889832262611268488, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 667020298 and 667020307.

It is not an unprimeable number, because it can be changed into a prime (667020331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166755083 + ... + 166755086.

Almost surely, 2^667020338 is an apocalyptic number.

667020338 is a deficient number, since it is larger than the sum of its proper divisors (333510172).

667020338 is a wasteful number, since it uses less digits than its factorization.

667020338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333510171.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 667020338 is about 25826.7368825409. The cubic root of 667020338 is about 873.7349176106.

The spelling of 667020338 in words is "six hundred sixty-seven million, twenty thousand, three hundred thirty-eight".