8685666742 has 8 divisors (see below), whose sum is σ = 13070125656. Its totient is φ = 4328958192.

The previous prime is 8685666733. The next prime is 8685666749. The reversal of 8685666742 is 2476665868.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8685666749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6936808 + ... + 6938059.

It is an arithmetic number, because the mean of its divisors is an integer number (1633765707).

Almost surely, 2^8685666742 is an apocalyptic number.

8685666742 is a deficient number, since it is larger than the sum of its proper divisors (4384458914).

8685666742 is a wasteful number, since it uses less digits than its factorization.

8685666742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13875182.

The product of its digits is 23224320, while the sum is 58.

The square root of 8685666742 is about 93196.9245308020. The cubic root of 8685666742 is about 2055.5800180968.

The spelling of 8685666742 in words is "eight billion, six hundred eighty-five million, six hundred sixty-six thousand, seven hundred forty-two".