9678769 has 4 divisors (see below), whose sum is σ = 9691380. Its totient is φ = 9666160.

The previous prime is 9678761. The next prime is 9678787.

9678769 is nontrivially palindromic in base 10.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1199025 + 8479744 = 1095^2 + 2912^2 .

It is a cyclic number.

It is not a de Polignac number, because 9678769 - 2³ = 9678761 is a prime.

It is a super-2 number, since 2×9678769² = 187357138710722, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

9678769 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9678761) 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, 5074 + ... + 6715.

It is an arithmetic number, because the mean of its divisors is an integer number (2422845).

Almost surely, 2^9678769 is an apocalyptic number.

It is an amenable number.

9678769 is a deficient number, since it is larger than the sum of its proper divisors (12611).

9678769 is a wasteful number, since it uses less digits than its factorization.

9678769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12610.

The product of its digits is 1143072, while the sum is 52.

The square root of 9678769 is about 3111.0720017383. The cubic root of 9678769 is about 213.1114128357. Note that the first 3 decimals are identical.

The spelling of 9678769 in words is "nine million, six hundred seventy-eight thousand, seven hundred sixty-nine".