8388761 has 2 divisors, whose sum is σ = 8388762. Its totient is φ = 8388760.

The previous prime is 8388739. The next prime is 8388763. The reversal of 8388761 is 1678838.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8323225 + 65536 = 2885^2 + 256^2 .

It is a cyclic number.

It is not a de Polignac number, because 8388761 - 2⁶ = 8388697 is a prime.

It is a super-2 number, since 2×8388761² = 140742622230242, which contains 22 as substring.

Together with 8388763, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (8388763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4194380 + 4194381.

It is an arithmetic number, because the mean of its divisors is an integer number (4194381).

Almost surely, 2^8388761 is an apocalyptic number.

It is an amenable number.

8388761 is a deficient number, since it is larger than the sum of its proper divisors (1).

8388761 is an equidigital number, since it uses as much as digits as its factorization.

8388761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 41.

The square root of 8388761 is about 2896.3357885439. The cubic root of 8388761 is about 203.1885699571.

The spelling of 8388761 in words is "eight million, three hundred eighty-eight thousand, seven hundred sixty-one".