66734000671 has 8 divisors (see below), whose sum is σ = 73045540064. Its totient is φ = 60590769120.

The previous prime is 66734000639. The next prime is 66734000677. The reversal of 66734000671 is 17600043766.

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 66734000671 - 2⁵ = 66734000639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66734000677) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 42076131 + ... + 42077716.

It is an arithmetic number, because the mean of its divisors is an integer number (9130692508).

Almost surely, 2^66734000671 is an apocalyptic number.

66734000671 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

66734000671 is a deficient number, since it is larger than the sum of its proper divisors (6311539393).

66734000671 is a wasteful number, since it uses less digits than its factorization.

66734000671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84153921.

The product of its (nonzero) digits is 127008, while the sum is 40.

The spelling of 66734000671 in words is "sixty-six billion, seven hundred thirty-four million, six hundred seventy-one", and thus it is an aban number.