66735671 has 8 divisors (see below), whose sum is σ = 67754160. Its totient is φ = 65723328.

The previous prime is 66735661. The next prime is 66735677. The reversal of 66735671 is 17653766.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66735671 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 (66735677) 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, 23300 + ... + 26006.

It is an arithmetic number, because the mean of its divisors is an integer number (8469270).

Almost surely, 2^66735671 is an apocalyptic number.

66735671 is a deficient number, since it is larger than the sum of its proper divisors (1018489).

66735671 is a wasteful number, since it uses less digits than its factorization.

66735671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3073.

The product of its digits is 158760, while the sum is 41.

The square root of 66735671 is about 8169.1903515587. The cubic root of 66735671 is about 405.6199842289.

The spelling of 66735671 in words is "sixty-six million, seven hundred thirty-five thousand, six hundred seventy-one".