9678761 has 2 divisors, whose sum is σ = 9678762. Its totient is φ = 9678760.

The previous prime is 9678751. The next prime is 9678787. The reversal of 9678761 is 1678769.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5973136 + 3705625 = 2444^2 + 1925^2 .

It is an emirp because it is prime and its reverse (1678769) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9678761 is a prime.

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

It is not a weakly prime, because it can be changed into another prime (9678751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4839380 + 4839381.

It is an arithmetic number, because the mean of its divisors is an integer number (4839381).

Almost surely, 2^9678761 is an apocalyptic number.

It is an amenable number.

9678761 is a deficient number, since it is larger than the sum of its proper divisors (1).

9678761 is an equidigital number, since it uses as much as digits as its factorization.

9678761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 44.

The square root of 9678761 is about 3111.0707160076. The cubic root of 9678761 is about 213.1113541198. Note that the first 3 decimals are identical.

The spelling of 9678761 in words is "nine million, six hundred seventy-eight thousand, seven hundred sixty-one".