66117416 has 32 divisors (see below), whose sum is σ = 131090400. Its totient is φ = 31176000.

The previous prime is 66117413. The next prime is 66117427. The reversal of 66117416 is 61471166.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (66117413) 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, 37286 + ... + 39018.

It is an arithmetic number, because the mean of its divisors is an integer number (4096575).

Almost surely, 2^66117416 is an apocalyptic number.

It is an amenable number.

66117416 is a deficient number, since it is larger than the sum of its proper divisors (64972984).

66117416 is a wasteful number, since it uses less digits than its factorization.

66117416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2009 (or 2005 counting only the distinct ones).

The product of its digits is 6048, while the sum is 32.

The square root of 66117416 is about 8131.2616487234. The cubic root of 66117416 is about 404.3635097032.

The spelling of 66117416 in words is "sixty-six million, one hundred seventeen thousand, four hundred sixteen".