9776643 has 8 divisors (see below), whose sum is σ = 13050048. Its totient is φ = 6510504.

The previous prime is 9776639. The next prime is 9776651. The reversal of 9776643 is 3466779.

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

It is not a de Polignac number, because 9776643 - 2² = 9776639 is a prime.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 9776595 and 9776604.

It is not an unprimeable number, because it can be changed into a prime (9776603) 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, 3880 + ... + 5882.

It is an arithmetic number, because the mean of its divisors is an integer number (1631256).

Almost surely, 2^9776643 is an apocalyptic number.

9776643 is a deficient number, since it is larger than the sum of its proper divisors (3273405).

9776643 is a wasteful number, since it uses less digits than its factorization.

9776643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3633.

The product of its digits is 190512, while the sum is 42.

The square root of 9776643 is about 3126.7623830410. The cubic root of 9776643 is about 213.8273493190.

The spelling of 9776643 in words is "nine million, seven hundred seventy-six thousand, six hundred forty-three".