66292117 has 4 divisors (see below), whose sum is σ = 66457836. Its totient is φ = 66126400.

The previous prime is 66292097. The next prime is 66292133. The reversal of 66292117 is 71129266.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30184036 + 36108081 = 5494^2 + 6009^2 .

It is a cyclic number.

It is not a de Polignac number, because 66292117 - 2⁷ = 66291989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66292217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82258 + ... + 83059.

It is an arithmetic number, because the mean of its divisors is an integer number (16614459).

Almost surely, 2^66292117 is an apocalyptic number.

It is an amenable number.

66292117 is a deficient number, since it is larger than the sum of its proper divisors (165719).

66292117 is a wasteful number, since it uses less digits than its factorization.

66292117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165718.

The product of its digits is 9072, while the sum is 34.

The square root of 66292117 is about 8141.9971137308. The cubic root of 66292117 is about 404.7193442451.

The spelling of 66292117 in words is "sixty-six million, two hundred ninety-two thousand, one hundred seventeen".