8606648621 has 4 divisors (see below), whose sum is σ = 8638407744. Its totient is φ = 8574889500.

The previous prime is 8606648593. The next prime is 8606648627. The reversal of 8606648621 is 1268466068.

It is a happy number.

8606648621 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8606648621 is a prime.

It is a super-2 number, since 2×8606648621² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8606648627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15879155 + ... + 15879696.

It is an arithmetic number, because the mean of its divisors is an integer number (2159601936).

Almost surely, 2^8606648621 is an apocalyptic number.

It is an amenable number.

8606648621 is a deficient number, since it is larger than the sum of its proper divisors (31759123).

8606648621 is a wasteful number, since it uses less digits than its factorization.

8606648621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31759122.

The product of its (nonzero) digits is 663552, while the sum is 47.

The square root of 8606648621 is about 92772.0249913733. The cubic root of 8606648621 is about 2049.3274510826.

The spelling of 8606648621 in words is "eight billion, six hundred six million, six hundred forty-eight thousand, six hundred twenty-one".