66008755 has 8 divisors (see below), whose sum is σ = 83379600. Its totient is φ = 50027616.

The previous prime is 66008753. The next prime is 66008759. The reversal of 66008755 is 55780066.

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 66008755 - 2¹ = 66008753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66008753) 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, 347320 + ... + 347509.

It is an arithmetic number, because the mean of its divisors is an integer number (10422450).

Almost surely, 2^66008755 is an apocalyptic number.

66008755 is a deficient number, since it is larger than the sum of its proper divisors (17370845).

66008755 is a wasteful number, since it uses less digits than its factorization.

66008755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694853.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 66008755 is about 8124.5772197697. The cubic root of 66008755 is about 404.1418704925.

Subtracting from 66008755 its product of nonzero digits (50400), we obtain a triangular number (65958355 = T₁₁₄₈₅).

The spelling of 66008755 in words is "sixty-six million, eight thousand, seven hundred fifty-five".