660667115 has 8 divisors (see below), whose sum is σ = 794894640. Its totient is φ = 527137632.

The previous prime is 660667103. The next prime is 660667123. The reversal of 660667115 is 511766066.

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 660667115 - 2⁴ = 660667099 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172424 + ... + 176213.

It is an arithmetic number, because the mean of its divisors is an integer number (99361830).

Almost surely, 2^660667115 is an apocalyptic number.

660667115 is a deficient number, since it is larger than the sum of its proper divisors (134227525).

660667115 is a wasteful number, since it uses less digits than its factorization.

660667115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349021.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 660667115 is about 25703.4455861466. The cubic root of 660667115 is about 870.9520185808.

The spelling of 660667115 in words is "six hundred sixty million, six hundred sixty-seven thousand, one hundred fifteen".