8064642020 has 24 divisors (see below), whose sum is σ = 16938802944. Its totient is φ = 3225274976.

The previous prime is 8064642011. The next prime is 8064642029. The reversal of 8064642020 is 202464608.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8064642011) and next prime (8064642029).

It is not an unprimeable number, because it can be changed into a prime (8064642029) 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, 87599 + ... + 154281.

It is an arithmetic number, because the mean of its divisors is an integer number (705783456).

Almost surely, 2^8064642020 is an apocalyptic number.

It is an amenable number.

8064642020 is an abundant number, since it is smaller than the sum of its proper divisors (8874160924).

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

8064642020 is a wasteful number, since it uses less digits than its factorization.

8064642020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72739 (or 72737 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 8064642020 is about 89803.3519418958. The cubic root of 8064642020 is about 2005.3723907869.

The spelling of 8064642020 in words is "eight billion, sixty-four million, six hundred forty-two thousand, twenty".