66684354862 has 8 divisors (see below), whose sum is σ = 100034075592. Its totient is φ = 33339663000.

The previous prime is 66684354859. The next prime is 66684354881. The reversal of 66684354862 is 26845348666.

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

It is a super-2 number, since 2×66684354862² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66684354797 and 66684354806.

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 3 ways as a sum of consecutive naturals, for example, 1223889 + ... + 1277212.

It is an arithmetic number, because the mean of its divisors is an integer number (12504259449).

Almost surely, 2^66684354862 is an apocalyptic number.

66684354862 is a deficient number, since it is larger than the sum of its proper divisors (33349720730).

66684354862 is a wasteful number, since it uses less digits than its factorization.

66684354862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2514434.

The product of its digits is 39813120, while the sum is 58.

The spelling of 66684354862 in words is "sixty-six billion, six hundred eighty-four million, three hundred fifty-four thousand, eight hundred sixty-two".