66740006734 has 8 divisors (see below), whose sum is σ = 100115134920. Its totient is φ = 33368295096.

The previous prime is 66740006719. The next prime is 66740006797. The reversal of 66740006734 is 43760004766.

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

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 804729 + ... + 883780.

It is an arithmetic number, because the mean of its divisors is an integer number (12514391865).

Almost surely, 2^66740006734 is an apocalyptic number.

66740006734 is a deficient number, since it is larger than the sum of its proper divisors (33375128186).

66740006734 is a wasteful number, since it uses less digits than its factorization.

66740006734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1708274.

The product of its (nonzero) digits is 508032, while the sum is 43.

The spelling of 66740006734 in words is "sixty-six billion, seven hundred forty million, six thousand, seven hundred thirty-four".