66115099 has 8 divisors (see below), whose sum is σ = 68492160. Its totient is φ = 63744576.

The previous prime is 66115097. The next prime is 66115109. The reversal of 66115099 is 99051166.

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 66115099 - 2¹ = 66115097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66115097) 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, 28854 + ... + 31060.

It is an arithmetic number, because the mean of its divisors is an integer number (8561520).

Almost surely, 2^66115099 is an apocalyptic number.

66115099 is a deficient number, since it is larger than the sum of its proper divisors (2377061).

66115099 is a wasteful number, since it uses less digits than its factorization.

66115099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3269.

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 66115099 is about 8131.1191726601. The cubic root of 66115099 is about 404.3587861812.

The spelling of 66115099 in words is "sixty-six million, one hundred fifteen thousand, ninety-nine".