9620909647 has 4 divisors (see below), whose sum is σ = 9642627720. Its totient is φ = 9599191576.

The previous prime is 9620909633. The next prime is 9620909651. The reversal of 9620909647 is 7469090269.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9620909647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9620909594 and 9620909603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9620909677) 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, 10858372 + ... + 10859257.

It is an arithmetic number, because the mean of its divisors is an integer number (2410656930).

Almost surely, 2^9620909647 is an apocalyptic number.

9620909647 is a deficient number, since it is larger than the sum of its proper divisors (21718073).

9620909647 is a wasteful number, since it uses less digits than its factorization.

9620909647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21718072.

The product of its (nonzero) digits is 1469664, while the sum is 52.

The square root of 9620909647 is about 98086.2357673084. The cubic root of 9620909647 is about 2126.8590621719.

The spelling of 9620909647 in words is "nine billion, six hundred twenty million, nine hundred nine thousand, six hundred forty-seven".