9780689563 has 8 divisors (see below), whose sum is σ = 9906353600. Its totient is φ = 9655072128.

The previous prime is 9780689537. The next prime is 9780689591. The reversal of 9780689563 is 3659860879.

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

It is a cyclic number.

It is not a de Polignac number, because 9780689563 - 2⁵ = 9780689531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9780689363) 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, 647683 + ... + 662611.

It is an arithmetic number, because the mean of its divisors is an integer number (1238294200).

Almost surely, 2^9780689563 is an apocalyptic number.

9780689563 is a deficient number, since it is larger than the sum of its proper divisors (125664037).

9780689563 is a wasteful number, since it uses less digits than its factorization.

9780689563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23301.

The product of its (nonzero) digits is 19595520, while the sum is 61.

The square root of 9780689563 is about 98897.3688375985. The cubic root of 9780689563 is about 2138.5684637270.

The spelling of 9780689563 in words is "nine billion, seven hundred eighty million, six hundred eighty-nine thousand, five hundred sixty-three".