9789674561 has 8 divisors (see below), whose sum is σ = 9814813440. Its totient is φ = 9764561232.

The previous prime is 9789674537. The next prime is 9789674581. The reversal of 9789674561 is 1654769879.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9789674561 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9789674494 and 9789674503.

It is not an unprimeable number, because it can be changed into a prime (9789674581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 930416 + ... + 940878.

It is an arithmetic number, because the mean of its divisors is an integer number (1226851680).

Almost surely, 2^9789674561 is an apocalyptic number.

It is an amenable number.

9789674561 is a deficient number, since it is larger than the sum of its proper divisors (25138879).

9789674561 is a wasteful number, since it uses less digits than its factorization.

9789674561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12775.

The product of its digits is 22861440, while the sum is 62.

The square root of 9789674561 is about 98942.7842796027. The cubic root of 9789674561 is about 2139.2231262401.

The spelling of 9789674561 in words is "nine billion, seven hundred eighty-nine million, six hundred seventy-four thousand, five hundred sixty-one".