8606020640 has 96 divisors (see below), whose sum is σ = 23278679424. Its totient is φ = 2945249280.

The previous prime is 8606020637. The next prime is 8606020651. The reversal of 8606020640 is 460206068.

It is a happy number.

It is a super-2 number, since 2×8606020640² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 8606020597 and 8606020606.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 632792 + ... + 646248.

It is an arithmetic number, because the mean of its divisors is an integer number (242486244).

Almost surely, 2^8606020640 is an apocalyptic number.

8606020640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8606020640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11639339712).

8606020640 is an abundant number, since it is smaller than the sum of its proper divisors (14672658784).

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

8606020640 is a wasteful number, since it uses less digits than its factorization.

8606020640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14050 (or 14042 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 8606020640 is about 92768.6403910287. The cubic root of 8606020640 is about 2049.2776070585.

The spelling of 8606020640 in words is "eight billion, six hundred six million, twenty thousand, six hundred forty".