8641650 has 48 divisors (see below), whose sum is σ = 21855744. Its totient is φ = 2258880.

The previous prime is 8641643. The next prime is 8641651. The reversal of 8641650 is 561468.

8641650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×8641650² = 149356229445000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (8641651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7407 + ... + 8493.

It is an arithmetic number, because the mean of its divisors is an integer number (455328).

Almost surely, 2^8641650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8641650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10927872).

8641650 is an abundant number, since it is smaller than the sum of its proper divisors (13214094).

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

8641650 is a wasteful number, since it uses less digits than its factorization.

8641650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155 (or 1150 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 8641650 is about 2939.6683486407. The cubic root of 8641650 is about 205.2101750860.

The spelling of 8641650 in words is "eight million, six hundred forty-one thousand, six hundred fifty".