66123734 has 16 divisors (see below), whose sum is σ = 102604320. Its totient is φ = 31938240.

The previous prime is 66123709. The next prime is 66123749. The reversal of 66123734 is 43732166.

It is a self number, because there is not a number n which added to its sum of digits gives 66123734.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4532 + ... + 12360.

It is an arithmetic number, because the mean of its divisors is an integer number (6412770).

Almost surely, 2^66123734 is an apocalyptic number.

66123734 is a deficient number, since it is larger than the sum of its proper divisors (36480586).

66123734 is a wasteful number, since it uses less digits than its factorization.

66123734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7975.

The product of its digits is 18144, while the sum is 32.

The square root of 66123734 is about 8131.6501400392. The cubic root of 66123734 is about 404.3763892511.

The spelling of 66123734 in words is "sixty-six million, one hundred twenty-three thousand, seven hundred thirty-four".