8201768634 has 24 divisors (see below), whose sum is σ = 17804497152. Its totient is φ = 2728692360.

The previous prime is 8201768633. The next prime is 8201768669. The reversal of 8201768634 is 4368671028.

8201768634 is a `hidden beast` number, since 8 + 2 + 0 + 1 + 7 + 6 + 8 + 634 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 8201768634.

It is not an unprimeable number, because it can be changed into a prime (8201768633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 426202 + ... + 445029.

It is an arithmetic number, because the mean of its divisors is an integer number (741854048).

Almost surely, 2^8201768634 is an apocalyptic number.

8201768634 is an abundant number, since it is smaller than the sum of its proper divisors (9602728518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8201768634 is a wasteful number, since it uses less digits than its factorization.

8201768634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871762 (or 871759 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 8201768634 is about 90563.6165024344. The cubic root of 8201768634 is about 2016.6746445905.

The spelling of 8201768634 in words is "eight billion, two hundred one million, seven hundred sixty-eight thousand, six hundred thirty-four".