8621646033 has 144 divisors (see below), whose sum is σ = 16570770048. Its totient is φ = 3887769600.

The previous prime is 8621646023. The next prime is 8621646083. The reversal of 8621646033 is 3306461268.

It is not a de Polignac number, because 8621646033 - 2⁶ = 8621645969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 8621645982 and 8621646000.

It is not an unprimeable number, because it can be changed into a prime (8621646023) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 7299703 + ... + 7300883.

It is an arithmetic number, because the mean of its divisors is an integer number (115074792).

Almost surely, 2^8621646033 is an apocalyptic number.

It is an amenable number.

8621646033 is a deficient number, since it is larger than the sum of its proper divisors (7949124015).

8621646033 is a wasteful number, since it uses less digits than its factorization.

8621646033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256 (or 1232 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 8621646033 is about 92852.8191979113. The cubic root of 8621646033 is about 2050.5171039757.

The spelling of 8621646033 in words is "eight billion, six hundred twenty-one million, six hundred forty-six thousand, thirty-three".