66697636364 has 12 divisors (see below), whose sum is σ = 116727677304. Its totient is φ = 33346871424.

The previous prime is 66697636349. The next prime is 66697636381. The reversal of 66697636364 is 46363679666.

It is a junction number, because it is equal to n+sod(n) for n = 66697636297 and 66697636306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 408197 + ... + 547740.

It is an arithmetic number, because the mean of its divisors is an integer number (9727306442).

Almost surely, 2^66697636364 is an apocalyptic number.

It is an amenable number.

66697636364 is a deficient number, since it is larger than the sum of its proper divisors (50030040940).

66697636364 is a wasteful number, since it uses less digits than its factorization.

66697636364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973384 (or 973382 counting only the distinct ones).

The product of its digits is 105815808, while the sum is 62.

The spelling of 66697636364 in words is "sixty-six billion, six hundred ninety-seven million, six hundred thirty-six thousand, three hundred sixty-four".