8747689 has 2 divisors, whose sum is σ = 8747690. Its totient is φ = 8747688.

The previous prime is 8747677. The next prime is 8747701. The reversal of 8747689 is 9867478.

8747689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (8747677) and next prime (8747701).

It can be written as a sum of positive squares in only one way, i.e., 6801664 + 1946025 = 2608^2 + 1395^2 .

It is a cyclic number.

It is not a de Polignac number, because 8747689 - 2⁷ = 8747561 is a prime.

It is a Chen prime.

8747689 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (8747489) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4373844 + 4373845.

It is an arithmetic number, because the mean of its divisors is an integer number (4373845).

Almost surely, 2^8747689 is an apocalyptic number.

It is an amenable number.

8747689 is a deficient number, since it is larger than the sum of its proper divisors (1).

8747689 is an equidigital number, since it uses as much as digits as its factorization.

8747689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 49.

The square root of 8747689 is about 2957.6492354571. The cubic root of 8747689 is about 206.0461218877.

The spelling of 8747689 in words is "eight million, seven hundred forty-seven thousand, six hundred eighty-nine".