66061017 has 12 divisors (see below), whose sum is σ = 104096304. Its totient is φ = 40036920.

The previous prime is 66061003. The next prime is 66061019. The reversal of 66061017 is 71016066.

It is not a de Polignac number, because 66061017 - 2¹¹ = 66058969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66061019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 333543 + ... + 333740.

It is an arithmetic number, because the mean of its divisors is an integer number (8674692).

Almost surely, 2^66061017 is an apocalyptic number.

It is an amenable number.

66061017 is a deficient number, since it is larger than the sum of its proper divisors (38035287).

66061017 is a wasteful number, since it uses less digits than its factorization.

66061017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667300 (or 667297 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 66061017 is about 8127.7928738373. The cubic root of 66061017 is about 404.2485012502.

The spelling of 66061017 in words is "sixty-six million, sixty-one thousand, seventeen".