666713338 has 8 divisors (see below), whose sum is σ = 1001656800. Its totient is φ = 332827740.

The previous prime is 666713321. The next prime is 666713339. The reversal of 666713338 is 833317666.

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

It is a super-3 number, since 3×666713338³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 666713294 and 666713303.

It is not an unprimeable number, because it can be changed into a prime (666713339) 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, 262888 + ... + 265411.

It is an arithmetic number, because the mean of its divisors is an integer number (125207100).

Almost surely, 2^666713338 is an apocalyptic number.

666713338 is a deficient number, since it is larger than the sum of its proper divisors (334943462).

666713338 is a wasteful number, since it uses less digits than its factorization.

666713338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528932.

The product of its digits is 326592, while the sum is 43.

The square root of 666713338 is about 25820.7927453825. The cubic root of 666713338 is about 873.6008498431.

The spelling of 666713338 in words is "six hundred sixty-six million, seven hundred thirteen thousand, three hundred thirty-eight".