660067067 has 8 divisors (see below), whose sum is σ = 721410672. Its totient is φ = 598946400.

The previous prime is 660067063. The next prime is 660067073. The reversal of 660067067 is 760760066.

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

It is a cyclic number.

It is not a de Polignac number, because 660067067 - 2² = 660067063 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 660067067.

It is not an unprimeable number, because it can be changed into a prime (660067061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49508 + ... + 61409.

It is an arithmetic number, because the mean of its divisors is an integer number (90176334).

Almost surely, 2^660067067 is an apocalyptic number.

660067067 is a deficient number, since it is larger than the sum of its proper divisors (61343605).

660067067 is a wasteful number, since it uses less digits than its factorization.

660067067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111469.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 660067067 is about 25691.7704138893. The cubic root of 660067067 is about 870.6882592658.

The spelling of 660067067 in words is "six hundred sixty million, sixty-seven thousand, sixty-seven".