66734736 has 40 divisors (see below), whose sum is σ = 176072064. Its totient is φ = 21770880.

The previous prime is 66734729. The next prime is 66734761. The reversal of 66734736 is 63743766.

66734736 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12535 + ... + 17046.

Almost surely, 2^66734736 is an apocalyptic number.

It is an amenable number.

66734736 is an abundant number, since it is smaller than the sum of its proper divisors (109337328).

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

66734736 is a wasteful number, since it uses less digits than its factorization.

66734736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29639 (or 29633 counting only the distinct ones).

The product of its digits is 381024, while the sum is 42.

The square root of 66734736 is about 8169.1331241448. The cubic root of 66734736 is about 405.6180899074.

The spelling of 66734736 in words is "sixty-six million, seven hundred thirty-four thousand, seven hundred thirty-six".