8645051689 has 4 divisors (see below), whose sum is σ = 8645734800. Its totient is φ = 8644368580.

The previous prime is 8645051683. The next prime is 8645051713. The reversal of 8645051689 is 9861505468.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8645051689 - 2¹¹ = 8645049641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8645051683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322207 + ... + 348004.

It is an arithmetic number, because the mean of its divisors is an integer number (2161433700).

Almost surely, 2^8645051689 is an apocalyptic number.

It is an amenable number.

8645051689 is a deficient number, since it is larger than the sum of its proper divisors (683111).

8645051689 is a wasteful number, since it uses less digits than its factorization.

8645051689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683110.

The product of its (nonzero) digits is 2073600, while the sum is 52.

The square root of 8645051689 is about 92978.7700983402. The cubic root of 8645051689 is about 2052.3709778485.

The spelling of 8645051689 in words is "eight billion, six hundred forty-five million, fifty-one thousand, six hundred eighty-nine".