9775663 has 12 divisors (see below), whose sum is σ = 10631088. Its totient is φ = 8957760.

The previous prime is 9775637. The next prime is 9775673. The reversal of 9775663 is 3665779.

9775663 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9775663 - 2⁹ = 9775151 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9775603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31278 + ... + 31588.

It is an arithmetic number, because the mean of its divisors is an integer number (885924).

Almost surely, 2^9775663 is an apocalyptic number.

9775663 is a deficient number, since it is larger than the sum of its proper divisors (855425).

9775663 is a wasteful number, since it uses less digits than its factorization.

9775663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414 (or 371 counting only the distinct ones).

The product of its digits is 238140, while the sum is 43.

The square root of 9775663 is about 3126.6056674931. The cubic root of 9775663 is about 213.8202044738.

The spelling of 9775663 in words is "nine million, seven hundred seventy-five thousand, six hundred sixty-three".