9621670617 has 40 divisors (see below), whose sum is σ = 15741190080. Its totient is φ = 5820634080.

The previous prime is 9621670609. The next prime is 9621670673. The reversal of 9621670617 is 7160761269.

It is a happy number.

9621670617 is a `hidden beast` number, since 9 + 6 + 21 + 6 + 7 + 0 + 617 = 666.

It is not a de Polignac number, because 9621670617 - 2³ = 9621670609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9621670687) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 15309 + ... + 139562.

It is an arithmetic number, because the mean of its divisors is an integer number (393529752).

Almost surely, 2^9621670617 is an apocalyptic number.

It is an amenable number.

9621670617 is a deficient number, since it is larger than the sum of its proper divisors (6119519463).

9621670617 is a wasteful number, since it uses less digits than its factorization.

9621670617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154955 (or 154946 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 9621670617 is about 98090.1147771782. The cubic root of 9621670617 is about 2126.9151356386.

The spelling of 9621670617 in words is "nine billion, six hundred twenty-one million, six hundred seventy thousand, six hundred seventeen".