66870266837 has 8 divisors (see below), whose sum is σ = 72965430912. Its totient is φ = 60777777600.

The previous prime is 66870266821. The next prime is 66870266839. The reversal of 66870266837 is 73866207866.

It is a happy number.

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 66870266837 - 2⁴ = 66870266821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66870266839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 616253 + ... + 716594.

It is an arithmetic number, because the mean of its divisors is an integer number (9120678864).

Almost surely, 2^66870266837 is an apocalyptic number.

It is an amenable number.

66870266837 is a deficient number, since it is larger than the sum of its proper divisors (6095164075).

66870266837 is a wasteful number, since it uses less digits than its factorization.

66870266837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337419.

The product of its (nonzero) digits is 24385536, while the sum is 59.

The spelling of 66870266837 in words is "sixty-six billion, eight hundred seventy million, two hundred sixty-six thousand, eight hundred thirty-seven".