1308647 has 2 divisors, whose sum is σ = 1308648. Its totient is φ = 1308646.

The previous prime is 1308613. The next prime is 1308649. The reversal of 1308647 is 7468031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1308647 - 2⁶ = 1308583 is a prime.

Together with 1308649, 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 (1308649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 654323 + 654324.

It is an arithmetic number, because the mean of its divisors is an integer number (654324).

2^1308647 is an apocalyptic number.

1308647 is a deficient number, since it is larger than the sum of its proper divisors (1).

1308647 is an equidigital number, since it uses as much as digits as its factorization.

1308647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 1308647 is about 1143.9611007373. The cubic root of 1308647 is about 109.3807351551.

The spelling of 1308647 in words is "one million, three hundred eight thousand, six hundred forty-seven".