67664655646676 has 24 divisors (see below), whose sum is σ = 129178232498784. Its totient is φ = 30756601291680.

The previous prime is 67664655646583. The next prime is 67664655646699.

67664655646676 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 67664655646676.

It is a congruent number.

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, 27375491 + ... + 29744693.

It is an arithmetic number, because the mean of its divisors is an integer number (5382426354116).

Almost surely, 2^{67664655646676} is an apocalyptic number.

It is an amenable number.

67664655646676 is a deficient number, since it is larger than the sum of its proper divisors (61513576852108).

67664655646676 is a wasteful number, since it uses less digits than its factorization.

67664655646676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3018311 (or 3018309 counting only the distinct ones).

The product of its digits is 32920473600, while the sum is 80.

The spelling of 67664655646676 in words is "sixty-seven trillion, six hundred sixty-four billion, six hundred fifty-five million, six hundred forty-six thousand, six hundred seventy-six".