66600115 has 8 divisors (see below), whose sum is σ = 80174160. Its totient is φ = 53110752.

The previous prime is 66600097. The next prime is 66600119. The reversal of 66600115 is 51100666.

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 66600115 - 2¹⁷ = 66469043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66600115.

It is not an unprimeable number, because it can be changed into a prime (66600119) 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, 19425 + ... + 22594.

It is an arithmetic number, because the mean of its divisors is an integer number (10021770).

Almost surely, 2^66600115 is an apocalyptic number.

66600115 is a deficient number, since it is larger than the sum of its proper divisors (13574045).

66600115 is a wasteful number, since it uses less digits than its factorization.

66600115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42341.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 66600115 is about 8160.8893510450. The cubic root of 66600115 is about 405.3451612220.

The spelling of 66600115 in words is "sixty-six million, six hundred thousand, one hundred fifteen".