66886070 has 32 divisors (see below), whose sum is σ = 128570112. Its totient is φ = 24992352.

The previous prime is 66886069. The next prime is 66886097. The reversal of 66886070 is 7068866.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6509 + ... + 13271.

It is an arithmetic number, because the mean of its divisors is an integer number (4017816).

Almost surely, 2^66886070 is an apocalyptic number.

66886070 is a deficient number, since it is larger than the sum of its proper divisors (61684042).

66886070 is a wasteful number, since it uses less digits than its factorization.

66886070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6836.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 66886070 is about 8178.3904284401. The cubic root of 66886070 is about 405.9244644191.

The spelling of 66886070 in words is "sixty-six million, eight hundred eighty-six thousand, seventy".