8643405245 has 8 divisors (see below), whose sum is σ = 10384694016. Its totient is φ = 6906319056.

The previous prime is 8643405241. The next prime is 8643405269. The reversal of 8643405245 is 5425043468.

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

It is a cyclic number.

It is not a de Polignac number, because 8643405245 - 2² = 8643405241 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8643405241) 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 7 ways as a sum of consecutive naturals, for example, 1046117 + ... + 1054346.

It is an arithmetic number, because the mean of its divisors is an integer number (1298086752).

Almost surely, 2^8643405245 is an apocalyptic number.

It is an amenable number.

8643405245 is a deficient number, since it is larger than the sum of its proper divisors (1741288771).

8643405245 is a wasteful number, since it uses less digits than its factorization.

8643405245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2101291.

The product of its (nonzero) digits is 460800, while the sum is 41.

The square root of 8643405245 is about 92969.9158061359. The cubic root of 8643405245 is about 2052.2406787077.

The spelling of 8643405245 in words is "eight billion, six hundred forty-three million, four hundred five thousand, two hundred forty-five".