66242734 has 4 divisors (see below), whose sum is σ = 99364104. Its totient is φ = 33121366.

The previous prime is 66242713. The next prime is 66242741. The reversal of 66242734 is 43724266.

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

It is a self number, because there is not a number n which added to its sum of digits gives 66242734.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16560682 + ... + 16560685.

It is an arithmetic number, because the mean of its divisors is an integer number (24841026).

Almost surely, 2^66242734 is an apocalyptic number.

66242734 is a deficient number, since it is larger than the sum of its proper divisors (33121370).

66242734 is a wasteful number, since it uses less digits than its factorization.

66242734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33121369.

The product of its digits is 48384, while the sum is 34.

The square root of 66242734 is about 8138.9639389790. The cubic root of 66242734 is about 404.6188233932.

The spelling of 66242734 in words is "sixty-six million, two hundred forty-two thousand, seven hundred thirty-four".