84682746009 has 9 divisors (see below), whose sum is σ = 122320783039. Its totient is φ = 56454582000.

The previous prime is 84682745999. The next prime is 84682746011. The reversal of 84682746009 is 90064728648.

The square root of 84682746009 is 291003.

It is a perfect power (a square), and thus also a powerful number.

84682746009 is a `hidden beast` number, since 8 + 4 + 6 + 8 + 27 + 4 + 600 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 63808275609 + 20874470400 = 252603^2 + 144480^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 84682746009 - 2¹³ = 84682737817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84682786009) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 824509 + ... + 921509.

Almost surely, 2^84682746009 is an apocalyptic number.

84682746009 is the 291003-rd square number.

84682746009 is the 145502-nd centered octagonal number.

It is an amenable number.

84682746009 is a deficient number, since it is larger than the sum of its proper divisors (37638037030).

84682746009 is an frugal number, since it uses more digits than its factorization.

84682746009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194008 (or 97004 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 84682746009 in words is "eighty-four billion, six hundred eighty-two million, seven hundred forty-six thousand, nine".