66704070672 has 80 divisors (see below), whose sum is σ = 198067680000. Its totient is φ = 21467972736.

The previous prime is 66704070661. The next prime is 66704070683. The reversal of 66704070672 is 27607040766.

It is an interprime number because it is at equal distance from previous prime (66704070661) and next prime (66704070683).

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 15 ways as a sum of consecutive naturals, for example, 2649672 + ... + 2674727.

It is an arithmetic number, because the mean of its divisors is an integer number (2475846000).

Almost surely, 2^66704070672 is an apocalyptic number.

It is an amenable number.

66704070672 is an abundant number, since it is smaller than the sum of its proper divisors (131363609328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66704070672 is a wasteful number, since it uses less digits than its factorization.

66704070672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5324445 (or 5324433 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 45.

The spelling of 66704070672 in words is "sixty-six billion, seven hundred four million, seventy thousand, six hundred seventy-two".