66084555 has 8 divisors (see below), whose sum is σ = 105735312. Its totient is φ = 35245088.

The previous prime is 66084541. The next prime is 66084569. The reversal of 66084555 is 55548066.

It is an interprime number because it is at equal distance from previous prime (66084541) and next prime (66084569).

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 66084555 - 2⁴ = 66084539 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2202804 + ... + 2202833.

It is an arithmetic number, because the mean of its divisors is an integer number (13216914).

Almost surely, 2^66084555 is an apocalyptic number.

66084555 is a deficient number, since it is larger than the sum of its proper divisors (39650757).

66084555 is a wasteful number, since it uses less digits than its factorization.

66084555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4405645.

The product of its (nonzero) digits is 144000, while the sum is 39.

The square root of 66084555 is about 8129.2407394541. The cubic root of 66084555 is about 404.2965077336.

The spelling of 66084555 in words is "sixty-six million, eighty-four thousand, five hundred fifty-five".