66120116 has 12 divisors (see below), whose sum is σ = 119700420. Its totient is φ = 31920000.

The previous prime is 66120107. The next prime is 66120127. The reversal of 66120116 is 61102166.

It can be written as a sum of positive squares in 2 ways, for example, as 20611600 + 45508516 = 4540^2 + 6746^2 .

It is a junction number, because it is equal to n+sod(n) for n = 66120091 and 66120100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284885 + ... + 285116.

It is an arithmetic number, because the mean of its divisors is an integer number (9975035).

Almost surely, 2^66120116 is an apocalyptic number.

It is an amenable number.

66120116 is a deficient number, since it is larger than the sum of its proper divisors (53580304).

66120116 is a wasteful number, since it uses less digits than its factorization.

66120116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570034 (or 570032 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 66120116 is about 8131.4276729244. The cubic root of 66120116 is about 404.3690138839.

The spelling of 66120116 in words is "sixty-six million, one hundred twenty thousand, one hundred sixteen".