66008577 has 8 divisors (see below), whose sum is σ = 88503840. Its totient is φ = 43759520.

The previous prime is 66008561. The next prime is 66008581. The reversal of 66008577 is 77580066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66008577 - 2⁴ = 66008561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66008507) 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, 60924 + ... + 61997.

It is an arithmetic number, because the mean of its divisors is an integer number (11062980).

Almost surely, 2^66008577 is an apocalyptic number.

It is an amenable number.

66008577 is a deficient number, since it is larger than the sum of its proper divisors (22495263).

66008577 is a wasteful number, since it uses less digits than its factorization.

66008577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123103.

The product of its (nonzero) digits is 70560, while the sum is 39.

The square root of 66008577 is about 8124.5662653461. The cubic root of 66008577 is about 404.1415072209.

The spelling of 66008577 in words is "sixty-six million, eight thousand, five hundred seventy-seven".