8640242670 has 16 divisors (see below), whose sum is σ = 20736582480. Its totient is φ = 2304064704.

The previous prime is 8640242659. The next prime is 8640242671. The reversal of 8640242670 is 762420468.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8640242671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144004015 + ... + 144004074.

It is an arithmetic number, because the mean of its divisors is an integer number (1296036405).

Almost surely, 2^8640242670 is an apocalyptic number.

8640242670 is an abundant number, since it is smaller than the sum of its proper divisors (12096339810).

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

8640242670 is a wasteful number, since it uses less digits than its factorization.

8640242670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288008099.

The product of its (nonzero) digits is 129024, while the sum is 39.

The square root of 8640242670 is about 92952.9056565743. The cubic root of 8640242670 is about 2051.9903469369.

The spelling of 8640242670 in words is "eight billion, six hundred forty million, two hundred forty-two thousand, six hundred seventy".