8685407 has 2 divisors, whose sum is σ = 8685408. Its totient is φ = 8685406.

The previous prime is 8685379. The next prime is 8685409. The reversal of 8685407 is 7045868.

8685407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8685407 - 2⁸ = 8685151 is a prime.

Together with 8685409, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8685409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4342703 + 4342704.

It is an arithmetic number, because the mean of its divisors is an integer number (4342704).

Almost surely, 2^8685407 is an apocalyptic number.

8685407 is a deficient number, since it is larger than the sum of its proper divisors (1).

8685407 is an equidigital number, since it uses as much as digits as its factorization.

8685407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 8685407 is about 2947.1014573645. The cubic root of 8685407 is about 205.5559527412. Note that the first 3 decimals are identical.

The spelling of 8685407 in words is "eight million, six hundred eighty-five thousand, four hundred seven".