66739934 has 8 divisors (see below), whose sum is σ = 102815688. Its totient is φ = 32468040.

The previous prime is 66739927. The next prime is 66739957. The reversal of 66739934 is 43993766.

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, 450872 + ... + 451019.

It is an arithmetic number, because the mean of its divisors is an integer number (12851961).

Almost surely, 2^66739934 is an apocalyptic number.

66739934 is a deficient number, since it is larger than the sum of its proper divisors (36075754).

66739934 is a wasteful number, since it uses less digits than its factorization.

66739934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901930.

The product of its digits is 734832, while the sum is 47.

The square root of 66739934 is about 8169.4512667620. The cubic root of 66739934 is about 405.6286208953.

The spelling of 66739934 in words is "sixty-six million, seven hundred thirty-nine thousand, nine hundred thirty-four".