66613017 has 16 divisors (see below), whose sum is σ = 92044800. Its totient is φ = 42806400.

The previous prime is 66613013. The next prime is 66613051. The reversal of 66613017 is 71031666.

It is not a de Polignac number, because 66613017 - 2² = 66613013 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66613013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24859 + ... + 27407.

It is an arithmetic number, because the mean of its divisors is an integer number (5752800).

Almost surely, 2^66613017 is an apocalyptic number.

It is an amenable number.

66613017 is a deficient number, since it is larger than the sum of its proper divisors (25431783).

66613017 is a wasteful number, since it uses less digits than its factorization.

66613017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2864.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 66613017 is about 8161.6797903373. The cubic root of 66613017 is about 405.3713344781.

The spelling of 66613017 in words is "sixty-six million, six hundred thirteen thousand, seventeen".