66117734 has 4 divisors (see below), whose sum is σ = 99176604. Its totient is φ = 33058866.

The previous prime is 66117691. The next prime is 66117757. The reversal of 66117734 is 43771166.

66117734 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 66117694 and 66117703.

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 as a sum of consecutive naturals, namely, 16529432 + ... + 16529435.

It is an arithmetic number, because the mean of its divisors is an integer number (24794151).

Almost surely, 2^66117734 is an apocalyptic number.

66117734 is a deficient number, since it is larger than the sum of its proper divisors (33058870).

66117734 is a wasteful number, since it uses less digits than its factorization.

66117734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33058869.

The product of its digits is 21168, while the sum is 35.

The square root of 66117734 is about 8131.2812028610. The cubic root of 66117734 is about 404.3641579811.

The spelling of 66117734 in words is "sixty-six million, one hundred seventeen thousand, seven hundred thirty-four".